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Discussion Starter · #1 ·
So I inherited a PC 4200 dovetail jig. Had to purchase the router bushings, specifically the 3/4" OD for half blind joints.

I have the pieces set up fine and I'm setting the depth of the bit to the stated 3/8" . But it seems as if the bit doesn't extend enough for my 1/2" wood as the bushing seems to take up most of the 3/8".

What am I doing wrong?


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check your router manual. the depth adjusting screw mechanism (typically) has a limited range - the router body can be moved up/down within the housing 'stops.'

the second photo shows the collet - it should reach "down" nearly to the foot plate....


btw, adjusting to the 'factory pre-set' stop as shown in the first pix can be a real PITA.
I turn the router bit up, stack the spacer board on the foot plate, then stack the finger plate on top of that, then adjust the depth so you can just feel the bit tip at the surface of the finger plate.
 

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Discussion Starter · #3 ·
check your router manual. the depth adjusting screw mechanism (typically) has a limited range - the router body can be moved up/down within the housing 'stops.'

the second photo shows the collet - it should reach "down" nearly to the foot plate....


btw, adjusting to the 'factory pre-set' stop as shown in the first pix can be a real PITA.
I turn the router bit up, stack the spacer board on the foot plate, then stack the finger plate on top of that, then adjust the depth so you can just feel the bit tip at the surface of the finger plate.
Thanks. The bit can go down a lot more, but thinking that because of how far the bushing goes down that the cuts made won't be enough. Guess I'll throw some sacrificial wood in and give it a try.

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cut/trim your bushing length so that it is slightly less than your template thickness.
The bushing you have is way too long.
then the 3/8" depth you are referring to is how far down in the wood the bit gets set to
measured from top of the wood 3/8" down

I have a Leigh 3 jig and had to cut my 5/8" bushings way shorter to work, just need enough bushing length to engage the template firmly,
DO NOT LET THE BUSHING BE LONGER THAN THE TEMPLATE THICKNESS

GOOD LUCK
Ron
 

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Discussion Starter · #5 ·
cut/trim your bushing length so that it is slightly less than your template thickness.

The bushing you have is way too long.

then the 3/8" depth you are referring to is how far down in the wood the bit gets set to

measured from top of the wood 3/8" down



I have a Leigh 3 jig and had to cut my 5/8" bushings way shorter to work, just need enough bushing length to engage the template firmly,

DO NOT LET THE BUSHING BE LONGER THAN THE TEMPLATE THICKNESS



GOOD LUCK

Ron
That's exactly what I thought. That's why I bought the Porter Cable bushings that are packaged with the jig, rather than the harbor freight version (which are the same size).

What did you trim your bushing with?

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Ro is dead on! I just filed mine down...


practice on some scrap wood first, and learn the settings for a nice fit of the dovetails. you don't want them sloppy, or, have to pound them together and apart (a little tapping is ok).
 
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