Kreg K4 Master Jig Question

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Forum topic by BentheViking posted 09-17-2012 01:08 PM 1488 views 0 times favorited 5 replies Add to Favorites Watch
View BentheViking's profile


1782 posts in 3079 days

09-17-2012 01:08 PM

Topic tags/keywords: jig question aspen drill-driver joining face frame cabinets

So I finally got a chance to use this over the weekend and I had forgotten how great of a kit this is.

I was converting a kitchen cabinet to a spot for the microwave so I was basically building a face frame to inset within the original cabinet frame. I was using 3/4” Aspen and the original frame was also 3/4”. I had a few spots where I don’t know quite what happened but the screw went just a little too much and started to splitting the wood on the front side. I’m not sure if the wood was slightly less than 3/4” in that one spot, if the screws were a little long (1 1/2”), if my angle on the screw insertion was a little off from the pilot hole, or if I just drove the screws a little too deep into the soft wood.

My question is have you ever (just to be on the safe side) used the wrong sized set up on this jig? ie I would have used the 5/8” set up rather than the 3/4” or if you were working with a something that was 1 1/8” thick using the 1” spacing.

-- It's made of wood. Real sturdy.--Chubbs Peterson

5 replies so far

View Lifesaver2000's profile


556 posts in 3627 days

#1 posted 09-17-2012 10:18 PM

I believe the recommended screw length for 3/4 to 3/4 joints is 1-1/4 inch, not the 1-1/2 inch you said you were using. This could be the source of your problem.

View JarodMorris's profile


167 posts in 2890 days

#2 posted 09-17-2012 10:44 PM

I echo Lifesaver2000. I think the manual says 3/4” wood = 1 1/4” screws. Hope you can get the split fixed. Glue and press back into place? If you try to press, make sure you put waxed paper on your clamp or you’ll have a nice addition of a clamp to your face frame (or start over with a new frame piece).


-- Dad: Someone was supposed to pick up his toys! Son: My name isn't "Someone".

View Howie's profile


2656 posts in 3438 days

#3 posted 09-17-2012 11:52 PM

Yep,should be 1-1/4” for 3/4”. I’d try Jarod’s method.

-- Life is good.

View BentheViking's profile


1782 posts in 3079 days

#4 posted 09-18-2012 02:10 AM

Remember that part about where I said I had forgotten about how awesome the kit was…I guess I also forgot things like reading directions and about screw length. Fortunately it I stopped before it got too bad and hopefully some sanding and putty will have it all set (its getting painted). Thanks for the help, but getting back to the question of whether or not setting it for thinner wood would be useful or not?

-- It's made of wood. Real sturdy.--Chubbs Peterson

View AKAndrew's profile


53 posts in 3290 days

#5 posted 09-18-2012 06:12 AM

I always test fit holes, and yes, I have used shorter settings and shorter screws than the jig calls for.

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