js

"js"

19/06/2004 2:25 PM

How do you make a caul?

How do you cut the concave shape on a caul? Cut on a bandsaw? Plane? Jointer
for a slight taper? And how much curve do you remove per foot?
Thanks!


This topic has 6 replies

LB

Larry Blanchard

in reply to "js" on 19/06/2004 2:25 PM

19/06/2004 10:16 AM

In article <[email protected]>,
[email protected] says...
> How do you cut the concave shape on a caul? Cut on a bandsaw? Plane? Jointer
> for a slight taper? And how much curve do you remove per foot?
> Thanks!
>
I used a hand plane. One stroke out from the middle to each end,
and then successively shorter strokes starting further out from
the middle. I don't have one handy to measure, but IIRC the
ends wound up about 1/8" thinner than the middle for a 4' caul.

And the curve is convex, not concave :-).

--
Where ARE those Iraqi WMDs?

Nn

Nova

in reply to "js" on 19/06/2004 2:25 PM

19/06/2004 10:37 AM

js wrote:

> How do you cut the concave shape on a caul? Cut on a bandsaw? Plane? Jointer
> for a slight taper? And how much curve do you remove per foot?
> Thanks!

Adjusting the infeed table on your jointer to be other than even with the blades
will produce a convex or concave (depending on whether it's higher or lower)
caul. I've produced many this way although it was unintentional. The amount of
curve would depend on the application.

--
Jack Novak
Buffalo, NY - USA
(Remove "SPAM" from email address to reply)

b

in reply to "js" on 19/06/2004 2:25 PM

19/06/2004 11:14 AM

On Sat, 19 Jun 2004 14:25:44 GMT, "js" <[email protected]> wrote:

>How do you cut the concave shape on a caul? Cut on a bandsaw? Plane? Jointer
>for a slight taper?


I'll generally do it on the jointer.
first get it straight, then make a cut that falls short of both ends,
then one that falls short of tha, etc.








>And how much curve do you remove per foot?


depends how stiff the caul is and how much pressure you will be
applying.




>Thanks!
>

you're welcome!

js

"js"

in reply to "js" on 19/06/2004 2:25 PM

20/06/2004 4:25 AM


"Unisaw A100" <[email protected]> wrote in message
news:[email protected]...
>
>
> Draw in AutoCAD and dowload it to the CNC router at work (of
> course).

Doh!
<Hand slap to forehead...>

Lr

"Leon"

in reply to "js" on 19/06/2004 2:25 PM

19/06/2004 6:53 PM

The easiest is to take a common board from the Borg and use it. Those
boards usually are not perfectly straight and have just the right amount of
curve in them.


"js" <[email protected]> wrote in message
news:[email protected]...
> How do you cut the concave shape on a caul? Cut on a bandsaw? Plane?
Jointer
> for a slight taper? And how much curve do you remove per foot?
> Thanks!
>
>

UA

Unisaw A100

in reply to "js" on 19/06/2004 2:25 PM

19/06/2004 9:16 PM

Draw in AutoCAD and dowload it to the CNC router at work (of
course).

UA100


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