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I picked up the micro jig primarily to do projects with 1/2" plywood. I have been unanable to find pan head, coarse thread screws in 3/4" length. Fine thread are available in that length but not coarse thread. At least none I have found.

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Hi James, thanks for the quick reply.
I've tried adjusting the jig distance from the edge of the stock with just a bit of improvement. Need to be extremely precise or something pops out someplace. Not much wiggle room with 1/2". Joining 1/2" to thicker stock is great but 1/2 to 1/2.....
Fine threads just don't cut it in plywood. So far, rabbet joints have been my best option.
What irritates me the most is it was advertised for 1/2" stock with no caveat about hardwood only. The fine screws might work ok in softwood, haven't tried that,

James Waller said:
I did some searching and like you all I could find were the 3/4" fine pan head screws. Maybe Kreg Rep can tell us if Kreg will be coming out with the 3/4" coarse pan head screw for the micro jig.

Depends on how you joining the wood, maybe try some "trial and error" on some 1/2" scrap using the 1" screws.

Keep us inform on your progress as I'm sure others may come across this problem and might be seeking answers.

Have a good day!
John, good question. Our new 3/4" screws were just developed recently. During development, we found that the short length of the 3/4" screw meant that with coarse threading you'd only get 2 or so full threads into the receiving workpiece with the screw fully seated in the Pocket-Hole. The end result of this, unlike the rest of our screws, was that the coarse threading did not add significant strength to the joint over fine threading, even in soft materials.

The recommendation with our 3/4" screws is to use materials hard enough to where fine threaded screws work fine... some plywood fits into this category, such as birch plywood.
Hi - I didn't think you would be able to get a whole lot of threads in there after I had reflected on it awhile. I am, naturally, a bit disappointed as that is the reason I initially bought it. However, after using it a bit I really like being able to get into smaller areas with it and I also have applications where I am joining half inch to 1x stock and the smaller pocket works really well.
Thanks for the response.

KregRep said:
John, good question. Our new 3/4" screws were just developed recently. During development, we found that the short length of the 3/4" screw meant that with coarse threading you'd only get 2 or so full threads into the receiving workpiece with the screw fully seated in the Pocket-Hole. The end result of this, unlike the rest of our screws, was that the coarse threading did not add significant strength to the joint over fine threading, even in soft materials.

The recommendation with our 3/4" screws is to use materials hard enough to where fine threaded screws work fine... some plywood fits into this category, such as birch plywood.
You might try these screws from SPAX, 8 x 3/4" Multi Material Phillips Square Pan Head, I found them at Home Depot. You have to drive them in very slowly. The screws have threads there full lenght. Hand screwing the last few threads is a safe way to go when using the Spax brand of screws. You can use a square or phillips screwdriver. They cost about two dollars for 35 screws. I hope this helps.
Hi Tim, thanks for the input. Will look into those on this weeks trip to HD....

Timothy Sluder said:
You might try these screws from SPAX, 8 x 3/4" Multi Material Phillips Square Pan Head, I found them at Home Depot. You have to drive them in very slowly. The screws have threads there full lenght. Hand screwing the last few threads is a safe way to go when using the Spax brand of screws. You can use a square or phillips screwdriver. They cost about two dollars for 35 screws. I hope this helps.
I found you can use the 1" screws on 1/2 material if you adjust the collar to slightly less than half inch on the drill bit, doesn't always work I find, definitely needs some fine tuning and a bit of glue helps. And DEFINITELY get the new jig for smaller holes (forget the model number, but I'm happier with it than the one that came with the K3)
I recently made some kitchen drawers out of 1/2 plywood and used 1" screws. Most of them didn't protrude but a few did. I noticed on the ones that did, it was not a significant amout and was overal pleased with the project. Good luck and I found that if I move the collar 1/16 - 1/8" iw would help out.
Sometimes biscuits are nice to use!!!!!!!!!!!!!!

John Schaben said:
Hi James, thanks for the quick reply.
I've tried adjusting the jig distance from the edge of the stock with just a bit of improvement. Need to be extremely precise or something pops out someplace. Not much wiggle room with 1/2". Joining 1/2" to thicker stock is great but 1/2 to 1/2.....
Fine threads just don't cut it in plywood. So far, rabbet joints have been my best option.
What irritates me the most is it was advertised for 1/2" stock with no caveat about hardwood only. The fine screws might work ok in softwood, haven't tried that,

James Waller said:
I did some searching and like you all I could find were the 3/4" fine pan head screws. Maybe Kreg Rep can tell us if Kreg will be coming out with the 3/4" coarse pan head screw for the micro jig.

Depends on how you joining the wood, maybe try some "trial and error" on some 1/2" scrap using the 1" screws.

Keep us inform on your progress as I'm sure others may come across this problem and might be seeking answers.

Have a good day!
Biscuits in 1/2" plywood? Have to think about that some. Plywood likes to tear out.Hit it with a 5/32 or even 1/8" cutter I don't think there will be much left to glue to. Remeber that 1/2" plywood is more like 3/8" plus a little.
I have been using the microjig a lot more lately. I've been resurrecting some old molding, stripping down and refinish. The old finish carpenters used two finish nails in the mitres to make sure they stayed aligned. Granted, the stock is more than 1/2" more like just under an inch thick but the smaller pocket gets me two screwsback there. Really draws them up nicely for a tight fit. Been using the 1" coarse thread screws. Took some fumbling to get the right settings but once I got it figured out it worked well. I also picked up some of those SPAX screws but haven't had a chance to try those yet.

Then state that in your advertising!

Most work with the micro is in plywood.



KregRep said:

John, good question. Our new 3/4" screws were just developed recently. During development, we found that the short length of the 3/4" screw meant that with coarse threading you'd only get 2 or so full threads into the receiving workpiece with the screw fully seated in the Pocket-Hole. The end result of this, unlike the rest of our screws, was that the coarse threading did not add significant strength to the joint over fine threading, even in soft materials.

The recommendation with our 3/4" screws is to use materials hard enough to where fine threaded screws work fine... some plywood fits into this category, such as birch plywood.

Just bought the micro jig and have been disappointed. I am going to return it. I find the hole does not exit the middle and very much at one end. Adjusted for 1/2" all around. I think the jig needs to move lower in my K4 system or the bit needs more of an angle.

I have tried the 5/8" bit length as suggested, moving stock out a bit, playing with this and that...

I wish Kreg would of gone with using the Deck drill bit, much thinner and make smaller screws for it.

I realize one of Kreg's main fame is you don't need glue but with the fine threads and the 1/2" thick wood you almost have to use glue. I could not keep the oak from splitting. 

Deck size drill bit, smaller deck size screws and glue with a "mini-micro jig" ..that would be nice.

Back to other jointing methods on smaller stuff.

How about drywall screws

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