JT

"Joe T"

14/02/2006 11:38 AM

PC Dovetail jig - router bits?

Just got the Porter-Cable 4212 d-t jig which includes HSS bits. The bits
are not standard sized bits nor available (from PC) in carbide. Question:
if I use a different sized (carbide) dovetail bit using the same guide
template on hardwoods, will the pins & tails still fit?

TIA.

Joe T.


This topic has 6 replies

Td

"Teamcasa"

in reply to "Joe T" on 14/02/2006 11:38 AM

14/02/2006 8:51 AM


"Joe T" <[email protected]> wrote in message
news:[email protected]...
> Just got the Porter-Cable 4212 d-t jig which includes HSS bits. The bits
> are not standard sized bits nor available (from PC) in carbide. Question:
> if I use a different sized (carbide) dovetail bit using the same guide
> template on hardwoods, will the pins & tails still fit?
>
> TIA.
>
> Joe T.
Only if the angle of the replacement bit is the same as the flare angle in
the pattern.
Dave



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HG

Hank Gillette

in reply to "Joe T" on 14/02/2006 11:38 AM

15/02/2006 9:20 PM

In article <[email protected]>,
"Joe T" <[email protected]> wrote:

> Just got the Porter-Cable 4212 d-t jig which includes HSS bits. The bits
> are not standard sized bits nor available (from PC) in carbide. Question:
> if I use a different sized (carbide) dovetail bit using the same guide
> template on hardwoods, will the pins & tails still fit?

From the PC Suplementary Instruction Manual:

"You are not limited to using the router bits supplied with your jig.
Other router bits can be used to produce a different
look or to work with thicker woods."

'If you choose to purchase alternate through-dovetail bits, keep in mind
the following:
1. The dovetail bit must have a 7° angle. This angle matches the tapered
fingers used to guide the straight bit.
2. The sum of the diameters of the dovetail and straight bits must equal
15/16". For example, a 5/8" dovetail bit
must have a 5/16" straight bit - the sum of both equalling 15/16".
3. The length of the cutter determines the maximum thickness of wood
that can be cut. The length of the cutter
on the dovetail bit is the maximum thickness of the pin board. The
length of the cutter on the straight bit is the
maximum thickness of the tail board. If your bits have 1" cutters, you
can make through-dovetails with 1" thick
boards.
4. Purchase bits that will not cut into the template guides. The
template guide used with the dovetail bit has an
inside diameter of 21/32". Use bits that will fit into this dimension.
Some larger bits might work, but with
minimal depth (Fig. 18A).
5. The inside diameter of the template guide used with the straight bit
is 17/32". Use straight bits that are smaller
than that dimension.'

'Some items to consider when purchasing alternate bits for half-blind
dovetails are:
1. A shallow angle of the bit requires a deeper cut. A steeper angle
requires a shallower cut.
2. The diameter of the bit should be slightly greater than 1/2". The
greater the diameter, the deeper the cut.
3. The bit should have a cutting length at least as long as the cutting
depth.'

--
Hank Gillette

Somewhere in Texas, there is a village missing its idiot.

JT

"Joe T"

in reply to "Joe T" on 14/02/2006 11:38 AM

16/02/2006 9:28 AM

Great info...many thanks.

Joe T.

"Hank Gillette" <[email protected]> wrote in message
news:[email protected]...
> In article <[email protected]>,
> "Joe T" <[email protected]> wrote:
>
>> Just got the Porter-Cable 4212 d-t jig which includes HSS bits. The bits
>> are not standard sized bits nor available (from PC) in carbide.
>> Question:
>> if I use a different sized (carbide) dovetail bit using the same guide
>> template on hardwoods, will the pins & tails still fit?
>
> From the PC Suplementary Instruction Manual:
>
> "You are not limited to using the router bits supplied with your jig.
> Other router bits can be used to produce a different
> look or to work with thicker woods."
>
> 'If you choose to purchase alternate through-dovetail bits, keep in mind
> the following:
> 1. The dovetail bit must have a 7° angle. This angle matches the tapered
> fingers used to guide the straight bit.
> 2. The sum of the diameters of the dovetail and straight bits must equal
> 15/16". For example, a 5/8" dovetail bit
> must have a 5/16" straight bit - the sum of both equalling 15/16".
> 3. The length of the cutter determines the maximum thickness of wood
> that can be cut. The length of the cutter
> on the dovetail bit is the maximum thickness of the pin board. The
> length of the cutter on the straight bit is the
> maximum thickness of the tail board. If your bits have 1" cutters, you
> can make through-dovetails with 1" thick
> boards.
> 4. Purchase bits that will not cut into the template guides. The
> template guide used with the dovetail bit has an
> inside diameter of 21/32". Use bits that will fit into this dimension.
> Some larger bits might work, but with
> minimal depth (Fig. 18A).
> 5. The inside diameter of the template guide used with the straight bit
> is 17/32". Use straight bits that are smaller
> than that dimension.'
>
> 'Some items to consider when purchasing alternate bits for half-blind
> dovetails are:
> 1. A shallow angle of the bit requires a deeper cut. A steeper angle
> requires a shallower cut.
> 2. The diameter of the bit should be slightly greater than 1/2". The
> greater the diameter, the deeper the cut.
> 3. The bit should have a cutting length at least as long as the cutting
> depth.'
>
> --
> Hank Gillette
>
> Somewhere in Texas, there is a village missing its idiot.

Cs

"CW"

in reply to "Joe T" on 14/02/2006 11:38 AM

16/02/2006 2:58 AM

What "flair angle" in what "pattern"?

"Teamcasa" <[email protected]> wrote in message
news:[email protected]...
>
> "Joe T" <[email protected]> wrote in message
> news:[email protected]...
> > Just got the Porter-Cable 4212 d-t jig which includes HSS bits. The
bits
> > are not standard sized bits nor available (from PC) in carbide.
Question:
> > if I use a different sized (carbide) dovetail bit using the same guide
> > template on hardwoods, will the pins & tails still fit?
> >
> > TIA.
> >
> > Joe T.
> Only if the angle of the replacement bit is the same as the flare angle in
> the pattern.
> Dave
>
>
>
> Posted Via Usenet.com Premium Usenet Newsgroup Services
> ----------------------------------------------------------
> ** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **
> ----------------------------------------------------------
> http://www.usenet.com

JT

"Joe T"

in reply to "Joe T" on 14/02/2006 11:38 AM

14/02/2006 7:19 PM

Thanks, Frank! Exactly what I was looking for. I also picked up the mini
DT template from PC to make small jewelry boxes. Am more apt to use exotic
hardwoods on the mini so when Whiteside has them available will place an
order.

Joe T.

"Frank K." <[email protected]> wrote in message
news:[email protected]...
> Joe,
>
> Whiteside makes a 17/32 7 degree. I just bought two from
> www.hartvilletool.com . Their number is RD7531. Whiteside doesn't make the
> 11/32 at this time. I asked them in an email and this is the
> reply I got.
>
> "Frank, thanks for your message.
>
> We do have two bits for the PC 4212 Dovetail Jig. They are
> D7-531 (#
> 43776PC) which is a 17/32", 7 deg., 1/2" shank dovetail bit.
> The straight
> that we made for this jig is a 1064A (# 43743PC) and is a
> 13/32 cut
> diameter..... These are the two bits that we have produced
> for that jig.
>
> We know there are others and we hope to be producing them as
> we learn about
> the jigs. It is a pleasure to make and provide quality made
> in the USA
> cutting tools to go with the jigs that are in the market."
>
> I emailed back asking the about the 13/32 versus the 11/32
> that the jig calls for, but haven't received a reply. I will
> post to the group when I hear from them.
>
> Frank
>
>
> "Joe T" <[email protected]> wrote in message
> news:[email protected]...
>> Just got the Porter-Cable 4212 d-t jig which includes HSS bits. The bits
>> are not standard sized bits nor available (from PC) in carbide.
>> Question: if I use a different sized (carbide) dovetail bit using the
>> same guide template on hardwoods, will the pins & tails still fit?
>>
>> TIA.
>>
>> Joe T.
>>
>
>

FK

"Frank K."

in reply to "Joe T" on 14/02/2006 11:38 AM

14/02/2006 12:42 PM

Joe,

Whiteside makes a 17/32 7 degree. I just bought two from
www.hartvilletool.com . Their number is RD7531. Whiteside
doesn't make the
11/32 at this time. I asked them in an email and this is the
reply I got.

"Frank, thanks for your message.

We do have two bits for the PC 4212 Dovetail Jig. They are
D7-531 (#
43776PC) which is a 17/32", 7 deg., 1/2" shank dovetail bit.
The straight
that we made for this jig is a 1064A (# 43743PC) and is a
13/32 cut
diameter..... These are the two bits that we have produced
for that jig.

We know there are others and we hope to be producing them as
we learn about
the jigs. It is a pleasure to make and provide quality made
in the USA
cutting tools to go with the jigs that are in the market."

I emailed back asking the about the 13/32 versus the 11/32
that the jig calls for, but haven't received a reply. I will
post to the group when I hear from them.

Frank


"Joe T" <[email protected]> wrote in message
news:[email protected]...
> Just got the Porter-Cable 4212 d-t jig which includes HSS
> bits. The bits are not standard sized bits nor available
> (from PC) in carbide. Question: if I use a different
> sized (carbide) dovetail bit using the same guide template
> on hardwoods, will the pins & tails still fit?
>
> TIA.
>
> Joe T.
>


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