On Mar 31, 6:08=A0pm, dpb <[email protected]> wrote:
> ...
> I don't know; I had an uncle (shortly after WWII) who started a interior
> decorating Armstrong dealership and cabinet shop who did a tremendous
> amount of work with one for quite a number of years (altho did have a
> separate tablesaw so didn't share time w/ the SS for that function). =A0H=
e
> seemed pretty adept/quick w/ it to me; of course I was fairly young kid
> back then... :)
My father and I made a lot of kitchen cabinet doors, wall paneling and
T&G flooring on one. The quill feed made setting tenon width easy and
the extra table on the end helped support long stiles. It came with
the shaper attachment, a decent set of molding cutters and the square
morticing drill. They aren't the most rigid of tools, mostly due to
the table support rods, but they are BIG, lots of capacity, with the
ability to drill lengthwise into the ends of 4"x4"x8' posts or make
the hinge and lock cuts in the edge of a door.
They force you to plan well, like completing all the sawing before
setting up the drill to mortice the stiles for the rails and muntins.
jsw
On 31 Mar 2011 05:15:21 GMT, John Doe <[email protected]> wrote:
>I need some tubing for a spacer. The outer diameter the same as a
>608 bearing, and the inner diameter no greater than 1/4 inch. As
>light as possible, hopefully no heavier than aluminum. It would be
>cut to about 1 inch length.
>
>What is a spacer like that called? I could use some keywords.
http://us.misumi-ec.com/us/ItemDetail/10300234620.html
--
Ned Simmons
On Thu, 31 Mar 2011 09:49:57 +0100, Stuart <[email protected]>
wrote:
>In article <[email protected]>,
> John Doe <[email protected]> wrote:
>> I need some tubing for a spacer. The outer diameter the same as a
>> 608 bearing, and the inner diameter no greater than 1/4 inch. As
>> light as possible, hopefully no heavier than aluminum. It would be
>> cut to about 1 inch length.
>
>> What is a spacer like that called? I could use some keywords.
>
>Don't know but I suspect you'll have to get something made or make it
>yourself. Tubing is never exact size, or even perfectly round, and there
>is often a seam up the inside.
Tubing, even DOM, is also rarely concentric.
On Mar 30, 11:15=A0pm, John Doe <[email protected]> wrote:
> I need some tubing for a spacer. The outer diameter the same as a
> 608 bearing, and the inner diameter no greater than 1/4 inch. As
> light as possible, hopefully no heavier than aluminum. It would be
> cut to about 1 inch length.
>
> What is a spacer like that called? I could use some keywords.
>
> Thanks.
Bar stock with a hole bored in it. What lathes were made to do.
Stan
wolfgang <[email protected]> wrote:
> On Mar 31, 12:00 pm, "J. Clarke" <[email protected]> wrote:
>> In article <[email protected]>, [email protected]
says...
>>
>>
>>
>> > > Oh contraire! DOM IS welded! I toured Trent Tube in WI and
was
> amazed at
>> > > the process. It all starts out as coil stock then it goes
through
> a
>> > > series of rolls that form it into a tube then it's TiG or
laser welde
> d,
>> > > cut to length then drawn over a mandrel in lengths equal to
the lengt
> h of
>> > > the mandrel.
>>
>> > Wow... Very interesting. Never would have thought that is the
way
> it is
>> > done.
>>
>> If you want seamless, you specify "seamless", which is made by a
rolling
>> process.
>
>
>
> Yeah, seamless tube is "drawn over mandrel" of necessity but,
drawn
> over mandrel is not necessarily seamless tube or pipe.
>
> If you are in this racket it helps to know the ASTM specs!
>
> Wolfgang
>
FWIW. I had ordered some from McMaster Carr for another purpose, they
call aluminum seamless tubing "single-line". Their description is
"Formed from a pierced cylinder of material, creating a uniform tube
without a weld or seam."
"J. Clarke" <[email protected]> wrote in message
news:[email protected]...
> In article <[email protected]>, [email protected] says...
>>
>> > Oh contraire! DOM IS welded! I toured Trent Tube in WI and was amazed
>> > at
>> > the process. It all starts out as coil stock then it goes through a
>> > series of rolls that form it into a tube then it's TiG or laser welded,
>> > cut to length then drawn over a mandrel in lengths equal to the length
>> > of
>> > the mandrel.
>>
>> Wow... Very interesting. Never would have thought that is the way it is
>> done.
>
> If you want seamless, you specify "seamless", which is made by a rolling
> process.
>
>
DOM usually is first resistance-welded -- often submerged-arc welded -- and
then drawn over a mandrel to flatten the weld and to produce a fairly
uniform strength, hardness, and diameter. DOM may be shrunk from its
original diameter by extruding it through a die while it's being drawn over
the mandrel.
Plain ERW, like EMT and common tubing of various types, may be sort of drawn
or rolled over a mandrel to flatten the weld, but it's not fully reformed
over a mandrel.
Seamless is pierced from solid bar and drawn over a mandrel. Once upon a
time it was the best tubing, but DOM made from flat sheet is so good today
that the performance is nearly identical. And DOM made from flat sheet
generally has more uniform thickness.
Some German tubing company had a miniature DOM machine at IMTS one year --
either '78 or '80 -- that was about six feet long and produced
soda-straw-sized tube from a flat strip of steel. I would love to have one
of those toys. It was really fun to watch.
In terms of pricing, ERW is the cheapest and seamless is the most expensive.
There also are some other methods used to make tubing today, including a
spinning method that produces a friction lap-weld. These came after my time
covering materials so I don't know anything about them.
--
Ed Huntress
"Leon" <[email protected]> wrote:
>
> "John Doe" <[email protected]> wrote in message
> news:[email protected]...
>>I need some tubing for a spacer. The outer diameter the same as a
>> 608 bearing, and the inner diameter no greater than 1/4 inch. As
>> light as possible, hopefully no heavier than aluminum. It would be
>> cut to about 1 inch length.
>>
>> What is a spacer like that called? I could use some keywords.
>>
>> Thanks.
>
> I am not exactly sure what size a 608 bearing is
Maybe I should have been more specific, but a 608 bearing is a
common piece of hardware.
--
> but would a
> 584933377743xr4883.0034 work too?
>
>
>
"J. Clarke" <[email protected]> wrote in message
news:[email protected]...
> In article <[email protected]>,
> [email protected] says...
>>
>> wolfgang <[email protected]> wrote:
>>
>> > On Mar 31, 12:00 pm, "J. Clarke" <[email protected]> wrote:
>> >> In article <[email protected]>, [email protected]
>> says...
>> >>
>> >>
>> >>
>> >> > > Oh contraire! DOM IS welded! I toured Trent Tube in WI and
>> was
>> > amazed at
>> >> > > the process. It all starts out as coil stock then it goes
>> through
>> > a
>> >> > > series of rolls that form it into a tube then it's TiG or
>> laser welde
>> > d,
>> >> > > cut to length then drawn over a mandrel in lengths equal to
>> the lengt
>> > h of
>> >> > > the mandrel.
>> >>
>> >> > Wow... Very interesting. Never would have thought that is the
>> way
>> > it is
>> >> > done.
>> >>
>> >> If you want seamless, you specify "seamless", which is made by a
>> rolling
>> >> process.
>> >
>> >
>> >
>> > Yeah, seamless tube is "drawn over mandrel" of necessity but,
>> drawn
>> > over mandrel is not necessarily seamless tube or pipe.
>> >
>> > If you are in this racket it helps to know the ASTM specs!
>> >
>> > Wolfgang
>> >
>>
>> FWIW. I had ordered some from McMaster Carr for another purpose, they
>> call aluminum seamless tubing "single-line". Their description is
>> "Formed from a pierced cylinder of material, creating a uniform tube
>> without a weld or seam."
>
> Seamless steel is not actually drawn at all--it's spun between two
> rollers and pressed over a mandrel, with the opening in the center
> actually resulting from the rolling process and the mandrel being there
> to provide a smooth inner surface with consistent (more or less)
> diameter.
I think you're speaking of the Mannesmann process, which is fairly recent.
But even there, they pierce the tube before the cavity opens up. The
conventional process, dating back to the 1920s, starts with actual
cone-piercing.
--
Ed Huntress
>
> Seamless aluminum tubing may be extruded or rolled.
>
>
"J. Clarke" <[email protected]> wrote in message
news:[email protected]...
> In article <[email protected]>,
> [email protected] says...
>>
>> wolfgang <[email protected]> wrote:
>>
>> > On Mar 31, 12:00 pm, "J. Clarke" <[email protected]> wrote:
>> >> In article <[email protected]>, [email protected]
>> says...
>> >>
>> >>
>> >>
>> >> > > Oh contraire! DOM IS welded! I toured Trent Tube in WI and
>> was
>> > amazed at
>> >> > > the process. It all starts out as coil stock then it goes
>> through
>> > a
>> >> > > series of rolls that form it into a tube then it's TiG or
>> laser welde
>> > d,
>> >> > > cut to length then drawn over a mandrel in lengths equal to
>> the lengt
>> > h of
>> >> > > the mandrel.
>> >>
>> >> > Wow... Very interesting. Never would have thought that is the
>> way
>> > it is
>> >> > done.
>> >>
>> >> If you want seamless, you specify "seamless", which is made by a
>> rolling
>> >> process.
>> >
>> >
>> >
>> > Yeah, seamless tube is "drawn over mandrel" of necessity but,
>> drawn
>> > over mandrel is not necessarily seamless tube or pipe.
>> >
>> > If you are in this racket it helps to know the ASTM specs!
>> >
>> > Wolfgang
>> >
>>
>> FWIW. I had ordered some from McMaster Carr for another purpose, they
>> call aluminum seamless tubing "single-line". Their description is
>> "Formed from a pierced cylinder of material, creating a uniform tube
>> without a weld or seam."
>
> Seamless steel is not actually drawn at all--it's spun between two
> rollers and pressed over a mandrel, with the opening in the center
> actually resulting from the rolling process and the mandrel being there
> to provide a smooth inner surface with consistent (more or less)
> diameter.
>
> Seamless aluminum tubing may be extruded or rolled.
Aha! Here's a very succinct description of the Mannesmann process:
http://metalpass.com/metaldoc/paper.aspx?docID=367
Essentially, they work the steel with rollers until the core is about to
rupture from overworking, but then they run the bar over a cone pierce
before it actually opens up.
--
Ed Huntress
Ecnerwal <MyNameForward ReplaceWithMyVices.Com.invalid> wrote:
> John Doe <[email protected]> wrote:
>
>> I need some tubing for a spacer. The outer diameter the same as a
>> 608 bearing, and the inner diameter no greater than 1/4 inch. As
>> light as possible, hopefully no heavier than aluminum. It would be
>> cut to about 1 inch length.
>>
>> What is a spacer like that called? I could use some keywords.
> With those dimensions, drilling a 1/4" (or whatever size you
> actually want, since you say "no greater than") hole in a solid
> aluminum rod would be the direct route, for 1" length....
My next-door neighbor has an old ShopSmith, but getting that going
would be more trouble than it's worth. Seems to me that such simple
machined parts is a good use for the Internet, like the previously
mentioned website.
Ned Simmons <news nedsim.com> wrote:
> John Doe <[email protected]> wrote:
>
>>I need some tubing for a spacer. The outer diameter the same as a
>>608 bearing, and the inner diameter no greater than 1/4 inch. As
>>light as possible, hopefully no heavier than aluminum. It would be
>>cut to about 1 inch length.
>>
>>What is a spacer like that called? I could use some keywords.
>
> http://us.misumi-ec.com/us/ItemDetail/10300234620.html
It looks easy enough, hopefully I got it right.
"FNCLA-V8-D22-L64.0-VKC-HKC"
aluminum, 8mm inner diameter and 22 mm outer diameter (the dimensions
of a 608 bearing), 64 mm length
Apparently the VKC-HKC checkboxes make it more precise.
FWIW.
I am planning to stick slices of the machined aluminum tube in
place of 608 wheel bearings, then stick a rod through them and
glue them to the rod, so I can use any skate or kick-scooter wheel
as a drive wheel. And naturally use 608 bearings for the fork to
hold the rod/wheel against the ground.
In article <[email protected]>,
John Doe <[email protected]> wrote:
> I need some tubing for a spacer. The outer diameter the same as a
> 608 bearing, and the inner diameter no greater than 1/4 inch. As
> light as possible, hopefully no heavier than aluminum. It would be
> cut to about 1 inch length.
> What is a spacer like that called? I could use some keywords.
Don't know but I suspect you'll have to get something made or make it
yourself. Tubing is never exact size, or even perfectly round, and there
is often a seam up the inside.
--
Stuart Winsor
Midland RISC OS show - Sat July 9th 2011
http://mug.riscos.org/show11/MUGshow.html
On Mar 31, 12:00=A0pm, "J. Clarke" <[email protected]> wrote:
> In article <[email protected]>, [email protected] says...
>
>
>
> > > Oh contraire! =A0DOM IS welded! =A0I toured Trent Tube in WI and was =
amazed at
> > > the process. =A0It all starts out as coil stock then it goes through =
a
> > > series of rolls that form it into a tube then it's TiG or laser welde=
d,
> > > cut to length then drawn over a mandrel in lengths equal to the lengt=
h of
> > > the mandrel.
>
> > Wow... =A0Very interesting. =A0Never would have thought that is the way=
it is
> > done.
>
> If you want seamless, you specify "seamless", which is made by a rolling
> process.
Yeah, seamless tube is "drawn over mandrel" of necessity but, drawn
over mandrel is not necessarily seamless tube or pipe.
If you are in this racket it helps to know the ASTM specs!
Wolfgang
John Doe wrote:
> I need some tubing for a spacer. The outer diameter the same as a
> 608 bearing, and the inner diameter no greater than 1/4 inch. As
> light as possible, hopefully no heavier than aluminum. It would be
> cut to about 1 inch length.
>
> What is a spacer like that called? I could use some keywords.
>
> Thanks.
bushing?
--
Richard Lamb
"Joe AutoDrill" <[email protected]> wrote in message
news:[email protected]...
>> Don't know but I suspect you'll have to get something made or make
>> it
>> yourself. Tubing is never exact size, or even perfectly round, and
>> there
>> is often a seam up the inside.
>
> To get tubing without a seam, search for "DOM" or "Drawn Over
> Mandrel" tubing as it is not welded or cast. It is essentially...
> well... Drawn over a mandrel or precision extruded.
>
> It's what they use when they need the strongest option as well as
> there are no hard spots created while welding the seam.
>
Oh contraire! DOM IS welded! I toured Trent Tube in WI and was
amazed at the process. It all starts out as coil stock then it goes
through a series of rolls that form it into a tube then it's TiG or
laser welded, cut to length then drawn over a mandrel in lengths equal
to the length of the mandrel.
On Mar 31, 2:06=A0pm, Ecnerwal
<[email protected]> wrote:
> In article <[email protected]>,
> =A0John Doe <[email protected]> wrote:
>
> > I need some tubing for a spacer. The outer diameter the same as a
> > 608 bearing, and the inner diameter no greater than 1/4 inch. As
> > light as possible, hopefully no heavier than aluminum. It would be
> > cut to about 1 inch length.
>
> > What is a spacer like that called? I could use some keywords.
>
> > Thanks.
>
> With those dimensions, drilling a 1/4" (or whatever size you actually
> want, since you say "no greater than") hole in a solid aluminum rod
> would be the direct route, for 1" length....
>
> --
> Cats, coffee, chocolate...vices to live by
I once made 30 or so "round nuts" from 1" lengths of 3/4" steel rod,
drilled and tapped for 1/4" bolts.
It was a long process considering everything was done in a DIY shop
using benchtop tools (miter saw and drill press) and hand tapping.
In article <[email protected]>, [email protected] says...
>
> > Oh contraire! DOM IS welded! I toured Trent Tube in WI and was amazed at
> > the process. It all starts out as coil stock then it goes through a
> > series of rolls that form it into a tube then it's TiG or laser welded,
> > cut to length then drawn over a mandrel in lengths equal to the length of
> > the mandrel.
>
> Wow... Very interesting. Never would have thought that is the way it is
> done.
If you want seamless, you specify "seamless", which is made by a rolling
process.
In article <[email protected]>,
[email protected] says...
>
> wolfgang <[email protected]> wrote:
>
> > On Mar 31, 12:00 pm, "J. Clarke" <[email protected]> wrote:
> >> In article <[email protected]>, [email protected]
> says...
> >>
> >>
> >>
> >> > > Oh contraire! DOM IS welded! I toured Trent Tube in WI and
> was
> > amazed at
> >> > > the process. It all starts out as coil stock then it goes
> through
> > a
> >> > > series of rolls that form it into a tube then it's TiG or
> laser welde
> > d,
> >> > > cut to length then drawn over a mandrel in lengths equal to
> the lengt
> > h of
> >> > > the mandrel.
> >>
> >> > Wow... Very interesting. Never would have thought that is the
> way
> > it is
> >> > done.
> >>
> >> If you want seamless, you specify "seamless", which is made by a
> rolling
> >> process.
> >
> >
> >
> > Yeah, seamless tube is "drawn over mandrel" of necessity but,
> drawn
> > over mandrel is not necessarily seamless tube or pipe.
> >
> > If you are in this racket it helps to know the ASTM specs!
> >
> > Wolfgang
> >
>
> FWIW. I had ordered some from McMaster Carr for another purpose, they
> call aluminum seamless tubing "single-line". Their description is
> "Formed from a pierced cylinder of material, creating a uniform tube
> without a weld or seam."
Seamless steel is not actually drawn at all--it's spun between two
rollers and pressed over a mandrel, with the opening in the center
actually resulting from the rolling process and the mandrel being there
to provide a smooth inner surface with consistent (more or less)
diameter.
Seamless aluminum tubing may be extruded or rolled.
In article <[email protected]>,
John Doe <[email protected]> wrote:
> I need some tubing for a spacer. The outer diameter the same as a
> 608 bearing, and the inner diameter no greater than 1/4 inch. As
> light as possible, hopefully no heavier than aluminum. It would be
> cut to about 1 inch length.
>
> What is a spacer like that called? I could use some keywords.
>
> Thanks.
With those dimensions, drilling a 1/4" (or whatever size you actually
want, since you say "no greater than") hole in a solid aluminum rod
would be the direct route, for 1" length....
--
Cats, coffee, chocolate...vices to live by
"John Doe" <[email protected]> wrote in message
news:[email protected]...
>I need some tubing for a spacer. The outer diameter the same as a
> 608 bearing, and the inner diameter no greater than 1/4 inch. As
> light as possible, hopefully no heavier than aluminum. It would be
> cut to about 1 inch length.
>
> What is a spacer like that called? I could use some keywords.
>
> Thanks.
McMaster Carr, among others, sells standoffs in various diameters and
lengths.
http://www.mcmaster.com/#catalog/117/3239/=bo5dc6
RogerN
"John Doe" <[email protected]> wrote in message
news:[email protected]...
> "Leon" <[email protected]> wrote:
>
>>
>> "John Doe" <[email protected]> wrote in message
>> news:[email protected]...
>>>I need some tubing for a spacer. The outer diameter the same as a
>>> 608 bearing, and the inner diameter no greater than 1/4 inch. As
>>> light as possible, hopefully no heavier than aluminum. It would be
>>> cut to about 1 inch length.
>>>
>>> What is a spacer like that called? I could use some keywords.
>>>
>>> Thanks.
>>
>> I am not exactly sure what size a 608 bearing is
>
> Maybe I should have been more specific, but a 608 bearing is a
> common piece of hardware.
It may verry well be a common piece of hardware, so is a #8 screw. Do you
know the thread and root diameter of that?
If you want credable suggestions try not to make it hard for some one to
help.
On Mar 31, 4:21=A0pm, John Doe <[email protected]> wrote:
> ...
> My next-door neighbor has an old ShopSmith, but getting that going
> would be more trouble than it's worth. Seems to me that such simple
> machined parts is a good use for the Internet, like the previously
> mentioned website.
Shopsmiths aren't really rigid enough to use as a metal lathe. I know
because I've tried. When we need simple machined parts for special
projects we simply machine them.
jsw
Thrust washer or bushing
On Mar 30, 10:15=A0pm, John Doe <[email protected]> wrote:
> I need some tubing for a spacer. The outer diameter the same as a
> 608 bearing, and the inner diameter no greater than 1/4 inch. As
> light as possible, hopefully no heavier than aluminum. It would be
> cut to about 1 inch length.
>
> What is a spacer like that called? I could use some keywords.
>
> Thanks.
On 3/30/2011 10:15 PM, John Doe wrote:
> I need some tubing for a spacer. The outer diameter the same as a
> 608 bearing, and the inner diameter no greater than 1/4 inch. As
> light as possible, hopefully no heavier than aluminum. It would be
> cut to about 1 inch length.
>
> What is a spacer like that called? I could use some keywords.
>
> Thanks.
try balsa wood
--
www.wbnoble.com
John Doe wrote:
> I need some tubing for a spacer. The outer diameter the same as a
> 608 bearing, and the inner diameter no greater than 1/4 inch. As
> light as possible, hopefully no heavier than aluminum. It would be
> cut to about 1 inch length.
>
> What is a spacer like that called? I could use some keywords.
>
McMaster has Garolite rods and tubes, but not 0.866 OD - the closest
they seem to have is 1/4 ID x 3/4 OD tube, or 7/8 rod.
How many do you need? If it's in the hundreds or thousands, the shop
where I sit could quote it: http://www.abiengr.com
Cheers!
Rich
On 3/31/2011 12:30 PM, John Doe wrote:
> "Leon"<[email protected]> wrote:
...
>> I am not exactly sure what size a 608 bearing is
>
> Maybe I should have been more specific, but a 608 bearing is a
> common piece of hardware.
For skaters, maybe...I knew what the common app is but couldn't have
told what the dimensions actually are. Turns out they're 22ODx8ID (mm)
nominal...
<http://www.amazon.com/Bearing-Designation-Metric-Plastic-Bearings/dp/B002HAR39M>
--
On 3/31/11 3:21 PM, John Doe wrote:
> My next-door neighbor has an old ShopSmith, but getting that going
> would be more trouble than it's worth. Seems to me that such simple
> machined parts is a good use for the Internet, like the previously
> mentioned website.
I used to work in a TV facility. The guy who ran the set shop and a shop
smith. They spent probably 75% as much on that thing as they would've
spent on separate power tools. They guy spent probably 75% of his time
changing the thing around to its different configurations.
--
-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 3/31/2011 3:21 PM, John Doe wrote:
> Ecnerwal<MyNameForward ReplaceWithMyVices.Com.invalid> wrote:
>
>> John Doe<[email protected]> wrote:
>>
>>> I need some tubing for a spacer. The outer diameter the same as a
>>> 608 bearing, and the inner diameter no greater than 1/4 inch. As
>>> light as possible, hopefully no heavier than aluminum. It would be
>>> cut to about 1 inch length.
>>>
>>> What is a spacer like that called? I could use some keywords.
>
>> With those dimensions, drilling a 1/4" (or whatever size you
>> actually want, since you say "no greater than") hole in a solid
>> aluminum rod would be the direct route, for 1" length....
>
> My next-door neighbor has an old ShopSmith, but getting that going
> would be more trouble than it's worth. Seems to me that such simple
> machined parts is a good use for the Internet, like the previously
> mentioned website.
Doubt seriously you'll find anything w/ the right OD that's thick-walled
enough to give the small ID.
You could buy 22mm stock and bore it in many materials including at
least some nonmetallics from McMaster Carr or a local (well-supplied)
ironmonger if you have one. It's close (but just under 7/8"); that
opens up even more possibilities if that's "close enough".
Something w/ a >1/4" (actually almost 5/16") wall thickness just isn't
going to be a stock part.
Using the Shopsmith as a centering drill press might be doable; chuck up
a short section. I forget whether they've got an option for a
open-center lathe chuck or not. Not trying to turn on it, it would
likely be good enough for centering unless need extreme precision.
--
On 3/31/2011 4:23 PM, -MIKE- wrote:
> On 3/31/11 3:21 PM, John Doe wrote:
>> My next-door neighbor has an old ShopSmith, but getting that going
>> would be more trouble than it's worth. Seems to me that such simple
>> machined parts is a good use for the Internet, like the previously
>> mentioned website.
>
> I used to work in a TV facility. The guy who ran the set shop and a shop
> smith. They spent probably 75% as much on that thing as they would've
> spent on separate power tools. They guy spent probably 75% of his time
> changing the thing around to its different configurations.
I don't know; I had an uncle (shortly after WWII) who started a interior
decorating Armstrong dealership and cabinet shop who did a tremendous
amount of work with one for quite a number of years (altho did have a
separate tablesaw so didn't share time w/ the SS for that function). He
seemed pretty adept/quick w/ it to me; of course I was fairly young kid
back then... :)
--
"wolfgang" <[email protected]> wrote in message
news:[email protected]...
On Mar 31, 12:00 pm, "J. Clarke" <[email protected]> wrote:
> In article <[email protected]>, [email protected] says...
>
>
>
> > > Oh contraire! DOM IS welded! I toured Trent Tube in WI and was amazed
> > > at
> > > the process. It all starts out as coil stock then it goes through a
> > > series of rolls that form it into a tube then it's TiG or laser
> > > welded,
> > > cut to length then drawn over a mandrel in lengths equal to the length
> > > of
> > > the mandrel.
>
> > Wow... Very interesting. Never would have thought that is the way it is
> > done.
>
> If you want seamless, you specify "seamless", which is made by a rolling
> process.
Yeah, seamless tube is "drawn over mandrel" of necessity but, drawn
over mandrel is not necessarily seamless tube or pipe.
If you are in this racket it helps to know the ASTM specs!
Wolfgang
-------------------------------------------------------------------------------
"Drawn" is more likely to be extruded over a mandrel.
--
Ever wonder why doctors, dentists and lawyers have to Practice so much? Ever
wonder why you let them Practice on You?
> Don't know but I suspect you'll have to get something made or make it
> yourself. Tubing is never exact size, or even perfectly round, and there
> is often a seam up the inside.
To get tubing without a seam, search for "DOM" or "Drawn Over Mandrel"
tubing as it is not welded or cast. It is essentially... well... Drawn
over a mandrel or precision extruded.
It's what they use when they need the strongest option as well as there are
no hard spots created while welding the seam.
Regards,
Joe Agro, Jr.
(800) 871-5022
01.908.542.0244
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"John Doe" <[email protected]> wrote in message
news:[email protected]...
>I need some tubing for a spacer. The outer diameter the same as a
> 608 bearing, and the inner diameter no greater than 1/4 inch. As
> light as possible, hopefully no heavier than aluminum. It would be
> cut to about 1 inch length.
>
> What is a spacer like that called? I could use some keywords.
>
> Thanks.
I am not exactly sure what size a 608 bearing is but would a
584933377743xr4883.0034 work too?
> Oh contraire! DOM IS welded! I toured Trent Tube in WI and was amazed at
> the process. It all starts out as coil stock then it goes through a
> series of rolls that form it into a tube then it's TiG or laser welded,
> cut to length then drawn over a mandrel in lengths equal to the length of
> the mandrel.
Wow... Very interesting. Never would have thought that is the way it is
done.
--
Regards,
Joe Agro, Jr.
(800) 871-5022
01.908.542.0244
Automatic / Pneumatic Drills: http://www.AutoDrill.com
Multiple Spindle Drills: http://www.Multi-Drill.com
Production Tapping: http://Production-Tapping-Equipment.com/
Flagship Site: http://www.Drill-N-Tap.com
VIDEOS: http://www.youtube.com/user/AutoDrill
TWITTER: http://twitter.com/AutoDrill
FACEBOOK: http://www.facebook.com/AutoDrill
V8013-R