PG

"Puff Griffis"

19/11/2004 2:00 AM

Dove tail joint's revisited

I know that answering questions about dove tail's might be getting =
old but I have another one. I have been practicing hand cutting some =
joints at 15*. They seem rather dull. What angle do you folks prefer or =
is it just an " Up to the individual" thing ?
Puff


This topic has 6 replies

cb

charlie b

in reply to "Puff Griffis" on 19/11/2004 2:00 AM

19/11/2004 2:46 AM

6 to 10 degrees, lower for hard woods, higher for soft woods.

If you skip the "degrees" thing and just go with triangles
with the base being 1 inch and height from 4 inches to
10 inches you'll get the following angles
1:4 about 14 degrees
1:5 " 11 "
1:6 " 9.5 " <----- soft stuff like pine
1:7 " 8 "
1:8 " 7 " <---- hard stuff like oak
1:9 " 6 "
1:10 " 5 3/4 "
Lay some out on a piece of scrap, pick the
one that looks good to you, set your bevel
gauge to that one and mark away.

Ss

SawDust

in reply to "Puff Griffis" on 19/11/2004 2:00 AM

19/11/2004 9:58 AM

Thank You Charlie. That's useful info for me...

It should be noted from some experimenting yesterday. The thickness
of the stock being used plays a role. On paper I layed out a 1:8
to look at it. If your using 1/4" stock it looks more like a box
joint, on larger stock it looks like a dovetail.

In some case, you may want to use a higher angle to get the look for
cosmetic reasons.

Pat


On Fri, 19 Nov 2004 02:46:56 -0800, charlie b <[email protected]>
wrote:

>6 to 10 degrees, lower for hard woods, higher for soft woods.
>
>If you skip the "degrees" thing and just go with triangles
>with the base being 1 inch and height from 4 inches to
>10 inches you'll get the following angles
>1:4 about 14 degrees
>1:5 " 11 "
>1:6 " 9.5 " <----- soft stuff like pine
>1:7 " 8 "
>1:8 " 7 " <---- hard stuff like oak
>1:9 " 6 "
>1:10 " 5 3/4 "
>Lay some out on a piece of scrap, pick the
>one that looks good to you, set your bevel
>gauge to that one and mark away.

Br

Ba r r y

in reply to "Puff Griffis" on 19/11/2004 2:00 AM

19/11/2004 11:40 AM

On Fri, 19 Nov 2004 02:00:13 -0600, "Puff Griffis" <[email protected]>
wrote:

> I know that answering questions about dove tail's might be getting old but I have another one. I have been practicing hand cutting some joints at 15*. They seem rather dull. What angle do you folks prefer or is it just an " Up to the individual" thing ?

The guy who taught me got me into setting the bevel gauge by eye. I
usually have no idea of the exact angle I'm using.

Barry

PG

"Puff Griffis"

in reply to "Puff Griffis" on 19/11/2004 2:00 AM

21/11/2004 6:49 PM

Thank you all for your input I will put it to use asap
Puff

"Puff Griffis" <[email protected]> wrote in message =
news:%[email protected]...
I know that answering questions about dove tail's might be getting =
old but I have another one. I have been practicing hand cutting some =
joints at 15*. They seem rather dull. What angle do you folks prefer or =
is it just an " Up to the individual" thing ?
Puff


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Andy Dingley

in reply to "Puff Griffis" on 19/11/2004 2:00 AM

19/11/2004 12:45 PM

On Fri, 19 Nov 2004 11:40:56 GMT, Ba r r y
<[email protected]> wrote:

>The guy who taught me got me into setting the bevel gauge by eye. I
>usually have no idea of the exact angle I'm using.

I bought an old workbench a while ago. Obviously home-made, but
well-done work. The top was encrusted with paint spills and allsorts,
so I scraped the whole thing clean again.

Underneath all the mess was revealed a pair of triangles, marked out
with what looked like a knife cut and india ink - one for 1:6
dovetails and one for 1:8. You place your sliding bevel on the bench
and set it off them.

AD

Andy Dingley

in reply to "Puff Griffis" on 19/11/2004 2:00 AM

19/11/2004 3:23 PM

On Fri, 19 Nov 2004 09:58:01 -0500, SawDust <[email protected]>
wrote:

>In some case, you may want to use a higher angle to get the look for
>cosmetic reasons.

I use 1:8 for hardwoods, 1:6 for softwoods.

Some Japanese work uses "dovetail shaped tenons". A chest end might be
made from two flat wide boards, joined by a small number of roughly
square tenons, set in from the edge of the morticed board. For these
I find that 1:5 looks better.

--
Smert' spamionam


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