questions about rare earth magnet settings

On Dec 16, 8:27=A0am, Larry Jaques <[email protected]>
wrote:
> On Thu, 15 Dec 2011 20:29:28 -0800 (PST), Father Haskell
>
>
>
>
>
> <[email protected]> wrote:
> >On Dec 14, 10:23=A0pm, marc rosen <[email protected]> wrote:
> >> Well, my goal was to have hidden magnets but after several trials none
> >> of the combinations would hold the two test boards together. =A0I boug=
ht
> >> some 3/8 inch magnets, confident the 1/4 inch would not be strong
> >> enough, and set them in the boards leaving only slightly more than 1/8
> >> inch of wood and air gap (the taper of the drill point). =A0I used 6
> >> magnets in each board and the holding power was so weak that you could
> >> not pick up one board with the other. =A0I then tried stacking more of
> >> them in each hole but that too proved useless so I had to abandon the
> >> invisible magnet approach and go to exposed magnets with the metal
> >> pocket. =A0Two, 3/8 inch magnets, medially located 5/8 inch from the
> >> ends on each face and you'd think the boards were velcrowed together.
> >> The box still looks nice andI'm certain the recipient will be very
> >> pleased but it would have been nice for me to have only wood
> >> showing. =A0 I'm the one who wanted no "hardware" showing, not the fol=
ks
> >> who asked for the pen set anfd box. =A0I'll try experimenting with 1/2
> >> inch magnets after Christmas and maybe it will work.
> >> Thanks anyway to those who responded. =A0And to all of you out there, =
I
> >> hope you have a great time this winter season. =A0Merry Christmas or
> >> Happy Chanukah. =A0And to my Zappa friends, Happy Zappadan.
>
> >> Marc
>
> >Merry Frankmas, Marc.
>
> http://www.youtube.com/watch?v=3Df5-p9TSDngg=A0Do not miss this!
>
> --
> Silence is more musical than any song.
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 -- Christina Rossetti- Hide quoted text -
>
> - Show quoted text -

Thanks for that Larry. So, are you one of us?
Marc

On Dec 13, 9:18=A0pm, marc rosen <[email protected]> wrote:
> Hey All,
> I am attempting to make a small clam shell type =A0presentation box (for
> a pen and pencil set I turned) using rare earth magnets to hold it
> shut. =A0I resawed a nice piece of cherry and routed two opposing
> grooves on each of the bookmatched faces. The 1/4 inch diameter
> magnets will be positioned in each corner of each half so I would need
> four pair of magnets to hold the two halves together. =A0I want the
> magnets hidden too so =A0I thought I would place them as close to the
> inside face as possible from the outside and plug the holes with a
> cocobolo dowel (the same wood as the pen bodies) .
> I did a few test mounts drilling the 1/4 inch hole and leaving 1/8
> inch wood face. =A0The 1/4 inch magnets will not hold very well with two
> 1/8 inch layers of wood. =A0They will attract when placed across 1/2
> inch cherry but I know the strength of their attraction is less than
> the strength necessary to hold two pieces of wood together. =A0 (The
> magnets are placed so they attract.) =A0 I only have 1/4 magnets right
> now but can pick up larger ones tomorrow although I am not inclined to
> go over 3/8 inch.
> So I'd like to know if anyone here has any suggestions about the
> thickness of wood (2 pieces) or the size of magnets needed to hold
> stuff together. =A0The faces are 7 by 4 inches so it's not a lot of
> weight but I think the 1/4 inch magnets are insufficient to do the
> job. =A0I would prefer to keep the wall thickness 1/8 inch because I am
> concerned about damaging it when trying to seat the magnet. =A0Would
> using two magnets in series in each hole make the attraction
> stronger? =A0I did not test that set up yet.
> Any suggestions are welcome and thanks in advance,
>
> Marc

In my experience putting 2 mags together only gives a slight
improvement...may be enough...may not. Look at lee valley for steel
cups to put mag in...it directs/focus's the mag force...you will need
to drill a larger hole tho.

On Wed, 14 Dec 2011 17:37:30 -0700, chaniarts <[email protected]>
wrote:

>On 12/14/2011 4:40 PM, Larry W wrote:
>> I cannot really answer your questions but do want to mention that
>> the strenght of these magnets can differ even for the same physical
>> size. I do not recall the units that are used to describe their strength
>> but it shouldn't be too hard to google up a reference.
>>
>>
>gauss

or tesla. ;-)

On Fri, 16 Dec 2011 20:13:51 -0800 (PST), marc rosen
<[email protected]> wrote:

>On Dec 16, 8:27 am, Larry Jaques <[email protected]>
>wrote:
>> On Thu, 15 Dec 2011 20:29:28 -0800 (PST), Father Haskell
>>
>>
>>
>>
>>
>> <[email protected]> wrote:
>> >On Dec 14, 10:23 pm, marc rosen <[email protected]> wrote:
>> >> Well, my goal was to have hidden magnets but after several trials none
>> >> of the combinations would hold the two test boards together.  I bought
>> >> some 3/8 inch magnets, confident the 1/4 inch would not be strong
>> >> enough, and set them in the boards leaving only slightly more than 1/8
>> >> inch of wood and air gap (the taper of the drill point).  I used 6
>> >> magnets in each board and the holding power was so weak that you could
>> >> not pick up one board with the other.  I then tried stacking more of
>> >> them in each hole but that too proved useless so I had to abandon the
>> >> invisible magnet approach and go to exposed magnets with the metal
>> >> pocket.  Two, 3/8 inch magnets, medially located 5/8 inch from the
>> >> ends on each face and you'd think the boards were velcrowed together.
>> >> The box still looks nice andI'm certain the recipient will be very
>> >> pleased but it would have been nice for me to have only wood
>> >> showing.   I'm the one who wanted no "hardware" showing, not the folks
>> >> who asked for the pen set anfd box.  I'll try experimenting with 1/2
>> >> inch magnets after Christmas and maybe it will work.
>> >> Thanks anyway to those who responded.  And to all of you out there, I
>> >> hope you have a great time this winter season.  Merry Christmas or
>> >> Happy Chanukah.  And to my Zappa friends, Happy Zappadan.
>>
>> >> Marc
>>
>> >Merry Frankmas, Marc.
>>
>> http://www.youtube.com/watch?v=f5-p9TSDngg Do not miss this!
>>
>> - Show quoted text -
>
>Thanks for that Larry. So, are you one of us?

I'm a Zappa fan, having cut my teeth on Hot Rats, if that's what you
mean. Otherwise, what is one of y'all?

--
Silence is more musical than any song.
-- Christina Rossetti

Well, my goal was to have hidden magnets but after several trials none
of the combinations would hold the two test boards together. I bought
some 3/8 inch magnets, confident the 1/4 inch would not be strong
enough, and set them in the boards leaving only slightly more than 1/8
inch of wood and air gap (the taper of the drill point). I used 6
magnets in each board and the holding power was so weak that you could
not pick up one board with the other. I then tried stacking more of
them in each hole but that too proved useless so I had to abandon the
invisible magnet approach and go to exposed magnets with the metal
pocket. Two, 3/8 inch magnets, medially located 5/8 inch from the
ends on each face and you'd think the boards were velcrowed together.
The box still looks nice andI'm certain the recipient will be very
pleased but it would have been nice for me to have only wood
showing. I'm the one who wanted no "hardware" showing, not the folks
who asked for the pen set anfd box. I'll try experimenting with 1/2
inch magnets after Christmas and maybe it will work.
Thanks anyway to those who responded. And to all of you out there, I
hope you have a great time this winter season. Merry Christmas or
Happy Chanukah. And to my Zappa friends, Happy Zappadan.

Marc

=A0And to all of you out there, I
> >> >> hope you have a great time this winter season. =A0Merry Christmas o=
r
> >> >> Happy Chanukah. =A0And to my Zappa friends, Happy Zappadan.
>
> >> >> Marc
>
> >> >Merry Frankmas, Marc.
>
> >>http://www.youtube.com/watch?v=3Df5-p9TSDngg=A0Do not miss this!
>
> >> - Show quoted text -
>
> >Thanks for that Larry. =A0So, are you one of us?
>
> I'm a Zappa fan, having cut my teeth on Hot Rats, if that's what you
> mean. =A0Otherwise, what is one of y'all?
>
> --
> Silence is more musical than any song.
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 -- Christina Rossetti- Hide quoted text -
>
> - Show quoted text -

Hi Larry,
Hot Rats is a great place to start. Thanks for the reply, that's all
I want to know.
By the way, magnets and felt worked and it looks good to me. The
recipient gets his pen set on Tuesday. As soon as I get my Dad's
Birthday turkey in the oven it's back to the basement shop to continue
working on my dining room table (as I steer the thread back on topic.
Hope you all have productive weekends too!
Marc

On Dec 15, 11:29=A0pm, Father Haskell <[email protected]> wrote:
> On Dec 14, 10:23=A0pm, marc rosen <[email protected]> wrote:
>
>
>
>
>
> > Well, my goal was to have hidden magnets but after several trials none
> > of the combinations would hold the two test boards together. =A0I bough=
t
> > some 3/8 inch magnets, confident the 1/4 inch would not be strong
> > enough, and set them in the boards leaving only slightly more than 1/8
> > inch of wood and air gap (the taper of the drill point). =A0I used 6
> > magnets in each board and the holding power was so weak that you could
> > not pick up one board with the other. =A0I then tried stacking more of
> > them in each hole but that too proved useless so I had to abandon the
> > invisible magnet approach and go to exposed magnets with the metal
> > pocket. =A0Two, 3/8 inch magnets, medially located 5/8 inch from the
> > ends on each face and you'd think the boards were velcrowed together.
> > The box still looks nice andI'm certain the recipient will be very
> > pleased but it would have been nice for me to have only wood
> > showing. =A0 I'm the one who wanted no "hardware" showing, not the folk=
s
> > who asked for the pen set anfd box. =A0I'll try experimenting with 1/2
> > inch magnets after Christmas and maybe it will work.
> > Thanks anyway to those who responded. =A0And to all of you out there, I
> > hope you have a great time this winter season. =A0Merry Christmas or
> > Happy Chanukah. =A0And to my Zappa friends, Happy Zappadan.
>
> > Marc
>
> Merry Frankmas, Marc.- Hide quoted text -
>
> - Show quoted text -

Thanks Father,
I really appreciate that.
Marc

On Wed, 14 Dec 2011 19:23:14 -0800 (PST), marc rosen
<[email protected]> wrote:

>Well, my goal was to have hidden magnets but after several trials none
>of the combinations would hold the two test boards together. I bought
>some 3/8 inch magnets, confident the 1/4 inch would not be strong
>enough, and set them in the boards leaving only slightly more than 1/8
>inch of wood and air gap (the taper of the drill point). I used 6
>magnets in each board and the holding power was so weak that you could
>not pick up one board with the other. I then tried stacking more of

Yeah, and electrical plugs taped onto the outside of an outlet deliver
zero electricity, too.


>them in each hole but that too proved useless so I had to abandon the
>invisible magnet approach and go to exposed magnets with the metal
>pocket. Two, 3/8 inch magnets, medially located 5/8 inch from the
>ends on each face and you'd think the boards were velcrowed together.
>The box still looks nice andI'm certain the recipient will be very
>pleased but it would have been nice for me to have only wood
>showing. I'm the one who wanted no "hardware" showing, not the folks
>who asked for the pen set anfd box. I'll try experimenting with 1/2
>inch magnets after Christmas and maybe it will work.
>Thanks anyway to those who responded. And to all of you out there, I
>hope you have a great time this winter season. Merry Christmas or
>Happy Chanukah. And to my Zappa friends, Happy Zappadan.

Happy Zappadan! Now go cover those exposed mags with sticky felt, or
something else really thin. Dis -ain't- rocket surgery, mon.

P.S: Close only counts in horseshoes, hand grenades, and RE magnets.


--
However beautiful the strategy, you should occasionally look at the results.
-- Sir Winston Churchill

On Tue, 13 Dec 2011 23:31:28 -0800 (PST), "[email protected]"
<[email protected]> wrote:

>> > Hey All,
>> > I am attempting to make a small clam shell type  presentation box (for
>> > a pen and pencil set I turned) using rare earth magnets to hold it
>> > shut.  I resawed a nice piece of cherry and routed two opposing
>> > grooves on each of the bookmatched faces. The 1/4 inch diameter
>> > magnets will be positioned in each corner of each half so I would need
>> > four pair of magnets to hold the two halves together.  I want the
>> > magnets hidden too so  I thought I would place them as close to the
>> > inside face as possible from the outside and plug the holes with a
>> > cocobolo dowel (the same wood as the pen bodies) .

Put the magnets as close to the surface as possible and hide them with
felt buttons. Rare earth magnets are extremely strong.

Think NO GAP when mating magnets. -Much- stronger.


--
However beautiful the strategy, you should occasionally look at the results.
-- Sir Winston Churchill

On Dec 17, 10:41=A0am, Bruce <[email protected]> wrote:
> On Tue, 13 Dec 2011 19:18:00 -0700, marc rosen wrote
> (in article
> <000de890-7cab-4c4c-b256-d3e0b9015...@k10g2000yqk.googlegroups.com>):
>
>
>
>
>
>
>
>
>
> > Hey All,
> > I am attempting to make a small clam shell type =A0presentation box (fo=
r
> > a pen and pencil set I turned) using rare earth magnets to hold it
> > shut. =A0I resawed a nice piece of cherry and routed two opposing
> > grooves on each of the bookmatched faces. The 1/4 inch diameter
> > magnets will be positioned in each corner of each half so I would need
> > four pair of magnets to hold the two halves together. =A0I want the
> > magnets hidden too so =A0I thought I would place them as close to the
> > inside face as possible from the outside and plug the holes with a
> > cocobolo dowel (the same wood as the pen bodies) .
> > I did a few test mounts drilling the 1/4 inch hole and leaving 1/8
> > inch wood face. =A0The 1/4 inch magnets will not hold very well with tw=
o
> > 1/8 inch layers of wood. =A0They will attract when placed across 1/2
> > inch cherry but I know the strength of their attraction is less than
> > the strength necessary to hold two pieces of wood together. =A0 (The
> > magnets are placed so they attract.) =A0 I only have 1/4 magnets right
> > now but can pick up larger ones tomorrow although I am not inclined to
> > go over 3/8 inch.
> > So I'd like to know if anyone here has any suggestions about the
> > thickness of wood (2 pieces) or the size of magnets needed to hold
> > stuff together. =A0The faces are 7 by 4 inches so it's not a lot of
> > weight but I think the 1/4 inch magnets are insufficient to do the
> > job. =A0I would prefer to keep the wall thickness 1/8 inch because I am
> > concerned about damaging it when trying to seat the magnet. =A0Would
> > using two magnets in series in each hole make the attraction
> > stronger? =A0I did not test that set up yet.
> > Any suggestions are welcome and thanks in advance,
>
> > Marc
>
> You need a stronger magnet:http://www.kjmagnetics.com/proddetail.asp?prod=
=3DDY0Y0-N52

I want that, and for absolutely no goddamned reason.

HTF do they ship that without it sticking to anything
steel inside the truck, including the truck?

>
> Actually this site is a great place to find anything related to magnets..=
.
>
> -Bruce

On Dec 17, 9:33=A0am, Steve Turner <[email protected]>
wrote:
> On 12/17/2011 7:49 AM, marc rosen wrote:
>
>
>
>
>
>
>
>
>
> > =A0 And to all of you out there, I
> >>>>>> hope you have a great time this winter season. =A0Merry Christmas =
or
> >>>>>> Happy Chanukah. =A0And to my Zappa friends, Happy Zappadan.
>
> >>>>>> Marc
>
> >>>>> Merry Frankmas, Marc.
>
> >>>>http://www.youtube.com/watch?v=3Df5-p9TSDnggDo not miss this!
>
> >>>> - Show quoted text -
>
> >>> Thanks for that Larry. =A0So, are you one of us?
>
> >> I'm a Zappa fan, having cut my teeth on Hot Rats, if that's what you
> >> mean. =A0Otherwise, what is one of y'all?
>
> >> --
> >> Silence is more musical than any song.
> >> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0-- Christina Rossetti- Hide quoted =
text -
>
> >> - Show quoted text -
>
> > Hi Larry,
> > Hot Rats is a great place to start. =A0Thanks for the reply, that's all
> > I want to know.
>
> Ever heard the Tinseltown Rebellion version of "Peaches En Regalia"?
> Fun stuff.

Essential FZ. Phish did a surprisingly good cover.

On 12/13/2011 8:18 PM, marc rosen wrote:
> Hey All,
> I am attempting to make a small clam shell type presentation box (for
> a pen and pencil set I turned) using rare earth magnets to hold it
> shut. I resawed a nice piece of cherry and routed two opposing
> grooves on each of the bookmatched faces. The 1/4 inch diameter
> magnets will be positioned in each corner of each half so I would need
> four pair of magnets to hold the two halves together. I want the
> magnets hidden too so I thought I would place them as close to the
> inside face as possible from the outside and plug the holes with a
> cocobolo dowel (the same wood as the pen bodies) .
> I did a few test mounts drilling the 1/4 inch hole and leaving 1/8
> inch wood face. The 1/4 inch magnets will not hold very well with two
> 1/8 inch layers of wood. They will attract when placed across 1/2
> inch cherry but I know the strength of their attraction is less than
> the strength necessary to hold two pieces of wood together. (The
> magnets are placed so they attract.) I only have 1/4 magnets right
> now but can pick up larger ones tomorrow although I am not inclined to
> go over 3/8 inch.
> So I'd like to know if anyone here has any suggestions about the
> thickness of wood (2 pieces) or the size of magnets needed to hold
> stuff together. The faces are 7 by 4 inches so it's not a lot of
> weight but I think the 1/4 inch magnets are insufficient to do the
> job. I would prefer to keep the wall thickness 1/8 inch because I am
> concerned about damaging it when trying to seat the magnet. Would
> using two magnets in series in each hole make the attraction
> stronger? I did not test that set up yet.
> Any suggestions are welcome and thanks in advance,
>
> Marc

Can you stack the magnets? Like batteries stacked end to end both will
increase in strength.

On Tue, 13 Dec 2011 19:18:00 -0700, marc rosen wrote
(in article
<000de890-7cab-4c4c-b256-d3e0b9015996@k10g2000yqk.googlegroups.com>):

> Hey All,
> I am attempting to make a small clam shell type presentation box (for
> a pen and pencil set I turned) using rare earth magnets to hold it
> shut. I resawed a nice piece of cherry and routed two opposing
> grooves on each of the bookmatched faces. The 1/4 inch diameter
> magnets will be positioned in each corner of each half so I would need
> four pair of magnets to hold the two halves together. I want the
> magnets hidden too so I thought I would place them as close to the
> inside face as possible from the outside and plug the holes with a
> cocobolo dowel (the same wood as the pen bodies) .
> I did a few test mounts drilling the 1/4 inch hole and leaving 1/8
> inch wood face. The 1/4 inch magnets will not hold very well with two
> 1/8 inch layers of wood. They will attract when placed across 1/2
> inch cherry but I know the strength of their attraction is less than
> the strength necessary to hold two pieces of wood together. (The
> magnets are placed so they attract.) I only have 1/4 magnets right
> now but can pick up larger ones tomorrow although I am not inclined to
> go over 3/8 inch.
> So I'd like to know if anyone here has any suggestions about the
> thickness of wood (2 pieces) or the size of magnets needed to hold
> stuff together. The faces are 7 by 4 inches so it's not a lot of
> weight but I think the 1/4 inch magnets are insufficient to do the
> job. I would prefer to keep the wall thickness 1/8 inch because I am
> concerned about damaging it when trying to seat the magnet. Would
> using two magnets in series in each hole make the attraction
> stronger? I did not test that set up yet.
> Any suggestions are welcome and thanks in advance,
>
> Marc

You need a stronger magnet:
http://www.kjmagnetics.com/proddetail.asp?prod=DY0Y0-N52

Actually this site is a great place to find anything related to magnets...

-Bruce

>
> Ever heard the Tinseltown Rebellion version of "Peaches En Regalia"? =A0F=
un stuff.
>
> --
> Any given amount of traffic flow, no matter how
> sparse, will expand to fill all available lanes.
> To reply, eat the taco.http://www.flickr.com/photos/bbqboyee/- Hide quote=
d text -

Hi Steve,
Thanks. I have the entire Zappa catalogue and that's all I listen
too. TR Peaches is a great tune.

Marc

On Dec 14, 10:23=A0pm, marc rosen <[email protected]> wrote:
> Well, my goal was to have hidden magnets but after several trials none
> of the combinations would hold the two test boards together. =A0I bought
> some 3/8 inch magnets, confident the 1/4 inch would not be strong
> enough, and set them in the boards leaving only slightly more than 1/8
> inch of wood and air gap (the taper of the drill point). =A0I used 6
> magnets in each board and the holding power was so weak that you could
> not pick up one board with the other. =A0I then tried stacking more of
> them in each hole but that too proved useless so I had to abandon the
> invisible magnet approach and go to exposed magnets with the metal
> pocket. =A0Two, 3/8 inch magnets, medially located 5/8 inch from the
> ends on each face and you'd think the boards were velcrowed together.
> The box still looks nice andI'm certain the recipient will be very
> pleased but it would have been nice for me to have only wood
> showing. =A0 I'm the one who wanted no "hardware" showing, not the folks
> who asked for the pen set anfd box. =A0I'll try experimenting with 1/2
> inch magnets after Christmas and maybe it will work.
> Thanks anyway to those who responded. =A0And to all of you out there, I
> hope you have a great time this winter season. =A0Merry Christmas or
> Happy Chanukah. =A0And to my Zappa friends, Happy Zappadan.
>
> Marc

Merry Frankmas, Marc.

On Dec 17, 7:32=A0am, Larry Jaques <[email protected]>
wrote:
> On Fri, 16 Dec 2011 20:13:51 -0800 (PST), marc rosen
>
>
>
>
>
>
>
>
>
> <[email protected]> wrote:
> >On Dec 16, 8:27=A0am, Larry Jaques <[email protected]>
> >wrote:
> >> On Thu, 15 Dec 2011 20:29:28 -0800 (PST), Father Haskell
>
> >> <[email protected]> wrote:
> >> >On Dec 14, 10:23=A0pm, marc rosen <[email protected]> wrote:
> >> >> Well, my goal was to have hidden magnets but after several trials n=
one
> >> >> of the combinations would hold the two test boards together. =A0I b=
ought
> >> >> some 3/8 inch magnets, confident the 1/4 inch would not be strong
> >> >> enough, and set them in the boards leaving only slightly more than =
1/8
> >> >> inch of wood and air gap (the taper of the drill point). =A0I used =
6
> >> >> magnets in each board and the holding power was so weak that you co=
uld
> >> >> not pick up one board with the other. =A0I then tried stacking more=
of
> >> >> them in each hole but that too proved useless so I had to abandon t=
he
> >> >> invisible magnet approach and go to exposed magnets with the metal
> >> >> pocket. =A0Two, 3/8 inch magnets, medially located 5/8 inch from th=
e
> >> >> ends on each face and you'd think the boards were velcrowed togethe=
r.
> >> >> The box still looks nice andI'm certain the recipient will be very
> >> >> pleased but it would have been nice for me to have only wood
> >> >> showing. =A0 I'm the one who wanted no "hardware" showing, not the =
folks
> >> >> who asked for the pen set anfd box. =A0I'll try experimenting with =
1/2
> >> >> inch magnets after Christmas and maybe it will work.
> >> >> Thanks anyway to those who responded. =A0And to all of you out ther=
e, I
> >> >> hope you have a great time this winter season. =A0Merry Christmas o=
r
> >> >> Happy Chanukah. =A0And to my Zappa friends, Happy Zappadan.
>
> >> >> Marc
>
> >> >Merry Frankmas, Marc.
>
> >>http://www.youtube.com/watch?v=3Df5-p9TSDngg=A0Do not miss this!
>
> >> - Show quoted text -
>
> >Thanks for that Larry. =A0So, are you one of us?
>
> I'm a Zappa fan, having cut my teeth on Hot Rats, if that's what you
> mean. =A0Otherwise, what is one of y'all?

Apostrophe got me hooked. Second album HAD to be
Frank's first. Side 4 was like a thermonuclear mindfuck.

On Thu, 15 Dec 2011 20:29:28 -0800 (PST), Father Haskell
<[email protected]> wrote:

>On Dec 14, 10:23 pm, marc rosen <[email protected]> wrote:
>> Well, my goal was to have hidden magnets but after several trials none
>> of the combinations would hold the two test boards together.  I bought
>> some 3/8 inch magnets, confident the 1/4 inch would not be strong
>> enough, and set them in the boards leaving only slightly more than 1/8
>> inch of wood and air gap (the taper of the drill point).  I used 6
>> magnets in each board and the holding power was so weak that you could
>> not pick up one board with the other.  I then tried stacking more of
>> them in each hole but that too proved useless so I had to abandon the
>> invisible magnet approach and go to exposed magnets with the metal
>> pocket.  Two, 3/8 inch magnets, medially located 5/8 inch from the
>> ends on each face and you'd think the boards were velcrowed together.
>> The box still looks nice andI'm certain the recipient will be very
>> pleased but it would have been nice for me to have only wood
>> showing.   I'm the one who wanted no "hardware" showing, not the folks
>> who asked for the pen set anfd box.  I'll try experimenting with 1/2
>> inch magnets after Christmas and maybe it will work.
>> Thanks anyway to those who responded.  And to all of you out there, I
>> hope you have a great time this winter season.  Merry Christmas or
>> Happy Chanukah.  And to my Zappa friends, Happy Zappadan.
>>
>> Marc
>
>Merry Frankmas, Marc.

http://www.youtube.com/watch?v=f5-p9TSDngg Do not miss this!

--
Silence is more musical than any song.
-- Christina Rossetti

On Dec 14, 12:02=A0am, Leon <lcb11211@swbelldotnet> wrote:
> On 12/13/2011 8:18 PM, marc rosen wrote:
>
>
>
>
>
>
>
>
>
> > Hey All,
> > I am attempting to make a small clam shell type =A0presentation box (fo=
r
> > a pen and pencil set I turned) using rare earth magnets to hold it
> > shut. =A0I resawed a nice piece of cherry and routed two opposing
> > grooves on each of the bookmatched faces. The 1/4 inch diameter
> > magnets will be positioned in each corner of each half so I would need
> > four pair of magnets to hold the two halves together. =A0I want the
> > magnets hidden too so =A0I thought I would place them as close to the
> > inside face as possible from the outside and plug the holes with a
> > cocobolo dowel (the same wood as the pen bodies) .
> > I did a few test mounts drilling the 1/4 inch hole and leaving 1/8
> > inch wood face. =A0The 1/4 inch magnets will not hold very well with tw=
o
> > 1/8 inch layers of wood. =A0They will attract when placed across 1/2
> > inch cherry but I know the strength of their attraction is less than
> > the strength necessary to hold two pieces of wood together. =A0 (The
> > magnets are placed so they attract.) =A0 I only have 1/4 magnets right
> > now but can pick up larger ones tomorrow although I am not inclined to
> > go over 3/8 inch.
> > So I'd like to know if anyone here has any suggestions about the
> > thickness of wood (2 pieces) or the size of magnets needed to hold
> > stuff together. =A0The faces are 7 by 4 inches so it's not a lot of
> > weight but I think the 1/4 inch magnets are insufficient to do the
> > job. =A0I would prefer to keep the wall thickness 1/8 inch because I am
> > concerned about damaging it when trying to seat the magnet. =A0Would
> > using two magnets in series in each hole make the attraction
> > stronger? =A0I did not test that set up yet.
> > Any suggestions are welcome and thanks in advance,
>
> > Marc
>
> Can you stack the magnets? =A0Like batteries stacked end to end both will
> increase in strength.

the lee valley cup sets are the way to go... you can use epoxy to hold
the magnets in if the wood is too thin for screws. You might just need
the very small magnerts

shelly

On Sun, 18 Dec 2011 23:04:40 -0700, Father Haskell wrote
(in article
<9778a66a-cc04-4743-8df4-a996d8627ca9@cs7g2000vbb.googlegroups.com>):

> On Dec 17, 10:41 am, Bruce <[email protected]> wrote:

>>
>> You need a stronger
>> magnet:http://www.kjmagnetics.com/proddetail.asp?prod=DY0Y0-N52
>
> I want that, and for absolutely no goddamned reason.

I have a "smaller" one permanently stuck to my filing cabinet at work....

>
> HTF do they ship that without it sticking to anything
> steel inside the truck, including the truck?

I've wondered about that. Sure would screw with their compass.

>
>>
>> Actually this site is a great place to find anything related to magnets...
>>
>> -Bruce
>

I cannot really answer your questions but do want to mention that
the strenght of these magnets can differ even for the same physical
size. I do not recall the units that are used to describe their strength
but it shouldn't be too hard to google up a reference.


--
There are no stupid questions, but there are lots of stupid answers.

Larry Wasserman - Baltimore Maryland - lwasserm(a)sdf. lonestar. org

On 12/14/2011 4:40 PM, Larry W wrote:
> I cannot really answer your questions but do want to mention that
> the strenght of these magnets can differ even for the same physical
> size. I do not recall the units that are used to describe their strength
> but it shouldn't be too hard to google up a reference.
>
>
gauss

On 12/17/2011 7:49 AM, marc rosen wrote:
> And to all of you out there, I
>>>>>> hope you have a great time this winter season. Merry Christmas or
>>>>>> Happy Chanukah. And to my Zappa friends, Happy Zappadan.
>>
>>>>>> Marc
>>
>>>>> Merry Frankmas, Marc.
>>
>>>> http://www.youtube.com/watch?v=f5-p9TSDngg Do not miss this!
>>
>>>> - Show quoted text -
>>
>>> Thanks for that Larry. So, are you one of us?
>>
>> I'm a Zappa fan, having cut my teeth on Hot Rats, if that's what you
>> mean. Otherwise, what is one of y'all?
>>
>> --
>> Silence is more musical than any song.
>> -- Christina Rossetti- Hide quoted text -
>>
>> - Show quoted text -
>
> Hi Larry,
> Hot Rats is a great place to start. Thanks for the reply, that's all
> I want to know.

Ever heard the Tinseltown Rebellion version of "Peaches En Regalia"? Fun stuff.

--
Any given amount of traffic flow, no matter how
sparse, will expand to fill all available lanes.
To reply, eat the taco.
http://www.flickr.com/photos/bbqboyee/

On 12/18/11 11:57 PM, Father Haskell wrote:
>
> Essential FZ. Phish did a surprisingly good cover.

As seen on a bumper sticker in a college town....
"Jerry's dead, Phish sucks, get a job."


--

-MIKE-

"Playing is not something I do at night, it's my function in life"
--Elvin Jones (1927-2004)
--
http://mikedrums.com
[email protected]
---remove "DOT" ^^^^ to reply

On Sun, 18 Dec 2011 22:00:08 -0800 (PST), Father Haskell
<[email protected]> wrote:

>On Dec 17, 7:32 am, Larry Jaques <[email protected]>
>wrote:
>> On Fri, 16 Dec 2011 20:13:51 -0800 (PST), marc rosen

>> >Thanks for that Larry.  So, are you one of us?
>>
>> I'm a Zappa fan, having cut my teeth on Hot Rats, if that's what you
>> mean.  Otherwise, what is one of y'all?
>
>Apostrophe got me hooked. Second album HAD to be
>Frank's first. Side 4 was like a thermonuclear mindfuck.

I'm more of a fan of Frank's for the irreverent humor than the music.
Then again, I liked the music more when I was less clearheaded, but
that was a whole 'nother life ago.

The poodle chews, the poodle bites it.

--
If you're trying to take a roomful of people by
surprise, it's a lot easier to hit your targets
if you don't yell going through the door.
-- Lois McMaster Bujold

On Sat, 17 Dec 2011 05:49:21 -0800 (PST), marc rosen
<[email protected]> wrote:

> And to all of you out there, I
>> >> >> hope you have a great time this winter season.  Merry Christmas or
>> >> >> Happy Chanukah.  And to my Zappa friends, Happy Zappadan.
>>
>> >> >> Marc
>>
>> >> >Merry Frankmas, Marc.
>>
>> >>http://www.youtube.com/watch?v=f5-p9TSDngg Do not miss this!
>>
>> >> - Show quoted text -
>>
>> >Thanks for that Larry.  So, are you one of us?
>>
>> I'm a Zappa fan, having cut my teeth on Hot Rats, if that's what you
>> mean.  Otherwise, what is one of y'all?
>>
>> --
>> Silence is more musical than any song.
>>                 -- Christina Rossetti- Hide quoted text -
>>
>> - Show quoted text -
>
>Hi Larry,
>Hot Rats is a great place to start. Thanks for the reply, that's all
>I want to know.

Peaches En Regalia and Willie The Pimp rule!


>By the way, magnets and felt worked and it looks good to me. The

Excellent. Grab that gauss by the, um, well, you know.


>recipient gets his pen set on Tuesday. As soon as I get my Dad's
>Birthday turkey in the oven it's back to the basement shop to continue
>working on my dining room table (as I steer the thread back on topic.

G'luck with steerage, sir. (Heavy currents, y'know.)


>Hope you all have productive weekends too!

Got the week's dishes done (oral surgery slowed me down there) and
baked a plum coffee cake (with 10 of my Santa Rosa plums in it) for
later.

Now I can start drawing up some drawer separators for a client. Oops,
the Pro features have expired. She wants vertical separators for her
Pyrex dishware.

I'll be looking for some poplar or other inexpensive clear wood for
the frame and using 1/4" ply for the separator leaves. Hmm, the
Hardwoods Plus store phone is out of order.

Big project: a whopping 2 of 'em, if I can find wood. <sigh>
But any work coming in these days is good work.

--
If you're trying to take a roomful of people by
surprise, it's a lot easier to hit your targets
if you don't yell going through the door.
-- Lois McMaster Bujold

On Wed, 14 Dec 2011 06:44:42 -0800, Larry Jaques
>Put the magnets as close to the surface as possible and hide them with
>felt buttons. Rare earth magnets are extremely strong.
>
>Think NO GAP when mating magnets. -Much- stronger.

And then don't forget to have a screw driver handy when you need to
pry the box open. <g>