nN

[email protected] (Nate Perkins)

10/10/2004 8:34 PM

Clamping compound miters

Hi folks,

Can you please tell me how you go about clamping parts that are
compound mitered?

I recently made a couple of doll cradles (one for my daughter and one
for a niece). Compound miters, joined with dovetails. I tried to
clamp them together with wedge-shaped cauls, only to find that
increasing the clamping pressure just causes the caul to slide down
the work. Web-type strap clamps slide around as well.

Anyone have a good method?

Thanks in advance,
Nate


This topic has 17 replies

mm

"mp"

in reply to [email protected] (Nate Perkins) on 10/10/2004 8:34 PM

10/10/2004 9:11 PM

> I recently made a couple of doll cradles (one for my daughter and one
> for a niece). Compound miters, joined with dovetails. I tried to
> clamp them together with wedge-shaped cauls, only to find that
> increasing the clamping pressure just causes the caul to slide down
> the work. Web-type strap clamps slide around as well.
>
> Anyone have a good method?

You could try making the wedge-shaped cauls with a hook on one end, and
shallows dados, the width of the web strap, on the outside of the caul. This
will keep both the cauls and the web strap in place.

AD

Andy Dingley

in reply to [email protected] (Nate Perkins) on 10/10/2004 8:34 PM

11/10/2004 12:10 PM

On 10 Oct 2004 20:34:35 -0700, [email protected] (Nate Perkins)
wrote:

>Can you please tell me how you go about clamping parts that are
>compound mitered?

Two ways:

Cling film (saran wrap). Not really kitchen cling film, but the
thickier, stretchier stuf fyou can get on a 6" wide roll for wrapping
awkward parcels.

Don't clamp it. Use a splined mitre and a glue with a high initial
tack. You might use some light clamping to stop it falling apart, but
the real location is coming from the spline, not the friction of the
clamping force.


And you usually need the trained octopus to help put it together,
because I don't have enough arms on my own.
--
Smert' spamionam

JJ

JGS

in reply to [email protected] (Nate Perkins) on 10/10/2004 8:34 PM

11/10/2004 7:38 AM

Cling Film. What a nifty idea. Cheers, JG

Andy Dingley wrote:

> On 10 Oct 2004 20:34:35 -0700, [email protected] (Nate Perkins)
> wrote:
>
> >Can you please tell me how you go about clamping parts that are
> >compound mitered?
>
> Two ways:
>
> Cling film (saran wrap). Not really kitchen cling film, but the
> thickier, stretchier stuf fyou can get on a 6" wide roll for wrapping
> awkward parcels.
>
> Don't clamp it. Use a splined mitre and a glue with a high initial
> tack. You might use some light clamping to stop it falling apart, but
> the real location is coming from the spline, not the friction of the
> clamping force.
>
> And you usually need the trained octopus to help put it together,
> because I don't have enough arms on my own.
> --
> Smert' spamionam

Td

"TeamCasa"

in reply to [email protected] (Nate Perkins) on 10/10/2004 8:34 PM

11/10/2004 9:29 AM

Make some cauls that match the compound angle, yet leave a 90 deg angle to
clamp. secure the caul with double stick tape or hot glue, do NOT over
tighten. A properly cut dovetail should not require much clamping pressure.
I clamp mainly to insure a square outcome.

Dave



"Nate Perkins" <[email protected]> wrote in message
news:[email protected]...
> Hi folks,
>
> Can you please tell me how you go about clamping parts that are
> compound mitered?
>
> I recently made a couple of doll cradles (one for my daughter and one
> for a niece). Compound miters, joined with dovetails. I tried to
> clamp them together with wedge-shaped cauls, only to find that
> increasing the clamping pressure just causes the caul to slide down
> the work. Web-type strap clamps slide around as well.
>
> Anyone have a good method?
>
> Thanks in advance,
> Nate

in

igor

in reply to [email protected] (Nate Perkins) on 10/10/2004 8:34 PM

11/10/2004 9:11 PM

On Mon, 11 Oct 2004 12:10:32 +0100, Andy Dingley <[email protected]>
wrote:

>On 10 Oct 2004 20:34:35 -0700, [email protected] (Nate Perkins)
>wrote:
>
>>Can you please tell me how you go about clamping parts that are
>>compound mitered?
>
>Two ways:
>
>Cling film (saran wrap). Not really kitchen cling film, but the
>thickier, stretchier stuf fyou can get on a 6" wide roll for wrapping
>awkward parcels.

Recalls for me a Carl Reiner, Mel Brooks as the 2000 Year Old Man routine:

Reiner: "How do you keep so healthy at your age?"

Brooks:" Fruits. There is a fruit for every disease. Name a disease and
I'll tell you the fruit."

Reiner:"TB?"

Brooks: "Blueberries. They go and find the bacteria, they stain it and
kill it."

Reiner:"Arterial sclerosis?"

Brooks:"Bananas. Or, a mushy pear."

Reiner, "Diarrhea?"

Brooks:" Peaches."

Reiner:"Any kind of peaches?"

Brooks:"No. Not Alberta. Cling. Cling peaches."

Aa

"AAvK"

in reply to [email protected] (Nate Perkins) on 10/10/2004 8:34 PM

11/10/2004 1:01 AM


> The link did not work on my system. Anyone else having a problem with it?


Okay, then look at these, second two (2 & 3) on the list:

http://www.adjustableclamp.com/spscrolla.htm

Alex

nN

[email protected] (Nate Perkins)

in reply to [email protected] (Nate Perkins) on 10/10/2004 8:34 PM

11/10/2004 9:35 AM

"Edwin Pawlowski" <[email protected]> wrote in message news:<[email protected]>...
> "Nate Perkins" <[email protected]> wrote in message
> >
> > I recently made a couple of doll cradles (one for my daughter and one
> > for a niece). Compound miters, joined with dovetails. I tried to
> > clamp them together with wedge-shaped cauls, only to find that
> > increasing the clamping pressure just causes the caul to slide down
> > the work.
>
> Forget the sissy clamping. Go with the framing nailer. Bam!, Bam! and
> you're done.

I guess I better go get a framing nailer. ;-P

nN

[email protected] (Nate Perkins)

in reply to [email protected] (Nate Perkins) on 10/10/2004 8:34 PM

11/10/2004 9:40 AM

"mp" <[email protected]> wrote in message news:<[email protected]>...
> > I recently made a couple of doll cradles (one for my daughter and one
> > for a niece). Compound miters, joined with dovetails. I tried to
> > clamp them together with wedge-shaped cauls, only to find that
> > increasing the clamping pressure just causes the caul to slide down
> > the work. Web-type strap clamps slide around as well.
> >
> > Anyone have a good method?
>
> You could try making the wedge-shaped cauls with a hook on one end, and
> shallows dados, the width of the web strap, on the outside of the caul. This
> will keep both the cauls and the web strap in place.

I think you're right. I was missing the hooks on the end of the
cauls. I'll try your way next go around.

Cheers,
Nate

nN

[email protected] (Nate Perkins)

in reply to [email protected] (Nate Perkins) on 10/10/2004 8:34 PM

11/10/2004 10:45 PM

"TeamCasa" <[email protected]> wrote in message news:<[email protected]>...
> Make some cauls that match the compound angle, yet leave a 90 deg angle to
> clamp. secure the caul with double stick tape or hot glue, do NOT over
> tighten. A properly cut dovetail should not require much clamping pressure.
> I clamp mainly to insure a square outcome.

Ah, I wish I'd thought of that. Another good use for hot glue.
Thanks to you and DanG for providing the same idea there.

Cheers,
Nate

Aa

"AAvK"

in reply to [email protected] (Nate Perkins) on 10/10/2004 8:34 PM

10/10/2004 9:21 PM


These kind of picture frame clamps can handle it I think, you can see what they do,
pretty much available commonly:
http://www.hartvilletool.com/product.phpsearch_id=170753&product_id=170753&affiliate_id=40&client=3931&location=www.rowecraft.com

Alex

EP

"Edwin Pawlowski"

in reply to [email protected] (Nate Perkins) on 10/10/2004 8:34 PM

11/10/2004 4:29 AM


"Nate Perkins" <[email protected]> wrote in message
>
> I recently made a couple of doll cradles (one for my daughter and one
> for a niece). Compound miters, joined with dovetails. I tried to
> clamp them together with wedge-shaped cauls, only to find that
> increasing the clamping pressure just causes the caul to slide down
> the work.

Forget the sissy clamping. Go with the framing nailer. Bam!, Bam! and
you're done.

tT

in reply to "Edwin Pawlowski" on 11/10/2004 4:29 AM

11/10/2004 6:15 AM

>
>"Nate Perkins" <[email protected]> wrote in message
>>
>> I recently made a couple of doll cradles (one for my daughter and one
>> for a niece). Compound miters, joined with dovetails. I tried to
>> clamp them together with wedge-shaped cauls, only to find that
>> increasing the clamping pressure just causes the caul to slide down
>> the work.
A good dovetail
shouldn't need clamping! Tom
Work at your leisure!

nN

[email protected] (Nate Perkins)

in reply to "Edwin Pawlowski" on 11/10/2004 4:29 AM

11/10/2004 9:38 AM

[email protected] (Tom) wrote in message news:<[email protected]>...
> >
> >"Nate Perkins" <[email protected]> wrote in message
> >>
> >> I recently made a couple of doll cradles (one for my daughter and one
> >> for a niece). Compound miters, joined with dovetails. I tried to
> >> clamp them together with wedge-shaped cauls, only to find that
> >> increasing the clamping pressure just causes the caul to slide down
> >> the work.
> A good dovetail
> shouldn't need clamping! Tom
> Work at your leisure!

Yep, they went together pretty well ... I pounded them together with a
rubber mallet, and there's just a hair width gap on the joints at the
baseline. I think the gap should be pretty much invisible after
finishing. But I think if I'd been able to clamp it it would have
come together tighter. I'm still learning as I'm going.

Bw

"Bob"

in reply to [email protected] (Nate Perkins) on 10/10/2004 8:34 PM

11/10/2004 4:56 AM

The link did not work on my system. Anyone else having a problem with it?

Bob

"AAvK" <[email protected]> wrote in message
news:PSnad.18446$_a3.7783@fed1read05...
>
> These kind of picture frame clamps can handle it I think, you can see what
they do,
> pretty much available commonly:
>
http://www.hartvilletool.com/product.phpsearch_id=170753&product_id=170753&affiliate_id=40&client=3931&location=www.rowecraft.com
>
> Alex
>
>

Dd

"DanG"

in reply to [email protected] (Nate Perkins) on 10/10/2004 8:34 PM

11/10/2004 6:31 AM

You can hot melt a sacrificial block on them and use Ulmia clamps.

You can hot melt fancier pieces on and use Chestnut Clam Clamps.

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Keep the whole world singing . . . .
DanG (remove the sevens)
[email protected]



"Nate Perkins" <[email protected]> wrote in message
news:[email protected]...
> Hi folks,
>
> Can you please tell me how you go about clamping parts that are
> compound mitered?
>
> I recently made a couple of doll cradles (one for my daughter
> and one
> for a niece). Compound miters, joined with dovetails. I tried
> to
> clamp them together with wedge-shaped cauls, only to find that
> increasing the clamping pressure just causes the caul to slide
> down
> the work. Web-type strap clamps slide around as well.
>
> Anyone have a good method?
>
> Thanks in advance,
> Nate

CS

"Charles Spitzer"

in reply to [email protected] (Nate Perkins) on 10/10/2004 8:34 PM

11/10/2004 12:06 PM


"Andy Dingley" <[email protected]> wrote in message
news:[email protected]...
> On 10 Oct 2004 20:34:35 -0700, [email protected] (Nate Perkins)
> wrote:
>
>>Can you please tell me how you go about clamping parts that are
>>compound mitered?
>
> Two ways:
>
> Cling film (saran wrap). Not really kitchen cling film, but the
> thickier, stretchier stuf fyou can get on a 6" wide roll for wrapping
> awkward parcels.

rubber bands?

> Don't clamp it. Use a splined mitre and a glue with a high initial
> tack. You might use some light clamping to stop it falling apart, but
> the real location is coming from the spline, not the friction of the
> clamping force.
>
>
> And you usually need the trained octopus to help put it together,
> because I don't have enough arms on my own.
> --
> Smert' spamionam

AD

Andy Dingley

in reply to [email protected] (Nate Perkins) on 10/10/2004 8:34 PM

11/10/2004 11:17 PM

On Mon, 11 Oct 2004 12:06:46 -0700, "Charles Spitzer"
<[email protected]> wrote:

>rubber bands?

No. Rubber bands have their own ideas about how long they ought to be
/ how much force to apply. This stuff can be wrapped and stretched to
fit, so that you get the right tension just where you need it.

Another thing I find useful in the workshop is Velcro. I have a few
huge reels of 2" Velcro, and a bit of this sewn into double-ended
strap. Take a few feet, then sew the ends together of opposing
flavours, with the active side opposite to each other. You can use
these as parcel tiedown straps for all sorts of jobs. A while back I
cycled across town with 8 yards of heavy fabric in a bundle on the
back of my bike, all held in place by a couple of these straps.

--
Smert' spamionam


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