Porter Cable 4212 dovetail jig - Router Forums
 
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post #1 of 8 (permalink) Old 03-03-2011, 09:36 PM Thread Starter
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Default Porter Cable 4212 dovetail jig

Can anyone tell me how I determine how deep to cut when using 1/2" stock to make half blind joints? My first attempt with 3/4" stock to make a half blind joint worked great! The only problem is I plan on using 1/2" for all four pieces of the drawer.
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post #2 of 8 (permalink) Old 03-04-2011, 01:37 AM
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Can anyone tell me how I determine how deep to cut when using 1/2" stock to make half blind joints? My first attempt with 3/4" stock to make a half blind joint worked great! The only problem is I plan on using 1/2" for all four pieces of the drawer.
Hi Jay.
The setting for all half-blind joints are the same from 1/2" to 1-1/8". The joint is referenced from the inside so same setting works for different thicknesses. If you are happy with the fit on 3/4" stock then use same setting for your 1/2". Thinner than 1/2" I would use the mini template.

Basically it is 5/8" from router base plate (1/4" for template & 3/8" for joint = 5/8"). This will get you in ballpark then adjust for liking.
Your drawer sizing for the pc jig is 1" + 1/4". That means your drawer heights will be for example 3-1/4", 4-1/4", 5-1/4", 6-1/4" etc for centered joints.

James
Whittier, CA.

Have a nice & safe day!
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post #3 of 8 (permalink) Old 03-04-2011, 10:49 AM
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Hi

I would suggest you set it to 3/8" deep. that's the neat thing about dovetail bits they will work on thin stock as well...it's the angle on the bit that sets up the lock.

Below you will one setup to cut 1/4" deep on 3/4" thick stock with a 1/2" dovetail bit.

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Last edited by bobj3; 03-04-2011 at 10:58 AM.
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post #4 of 8 (permalink) Old 03-04-2011, 11:44 AM
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BJ is that a UHMW table top?

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post #5 of 8 (permalink) Old 03-04-2011, 12:18 PM
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Hi KR

Just some 1/4" thick white plastic..


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BJ is that a UHMW table top?

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post #6 of 8 (permalink) Old 03-04-2011, 07:45 PM
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G'day Jay

Welcome to the router forum.

Thank you for joining us

James
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post #7 of 8 (permalink) Old 03-04-2011, 09:35 PM
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Hi

I would suggest you set it to 3/8" deep. that's the neat thing about dovetail bits they will work on thin stock as well...it's the angle on the bit that sets up the lock.

Below you will one setup to cut 1/4" deep on 3/4" thick stock with a 1/2" dovetail bit.

=========
=========
Hi Bob,
The O/P said he was using the PC jig. It is 3/8" for the joint. For this jig with the supplied bit you need to set the bit at 5/8" from the base plate of the router. This will accommodate 1/4" for the template thickness & 3/8" for the joint so he will have 5/8" of bit showing on his router setup.

James
Whittier, CA.

Have a nice & safe day!
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post #8 of 8 (permalink) Old 03-04-2011, 10:02 PM
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Hi James

Right on but I always use the brass setup bars on the bottom or the top of the template/plate to set the dovetail bit, in that way no guess work needed..

======




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Last edited by bobj3; 03-04-2011 at 10:05 PM.
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