About the v carve box gadget

I am trying out the box gadget which I don’t find particularly well explained. my question is about the “allowance feature” is this about how tight the joints are? If so, what should I use as an allowance? I’d like a snug fit but the first time I tried I had to use a mallet to get them together, and at the prices of sheet goods these days i don’t want to have to use a hammer and break the stuff. What allowance gives a nice snug fit without hammering them together. by the way is is 19/32 pine plywood. thanks

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I usually use an allowance of .003. Hope this helps

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I also use .003 and happy with results. I made a few boxes recently using my laser, and set it at 0. Came out perfect and the contrasting burn marks looked really cool on the assembled box.

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for the type of plywood i am using, basically sheathing, the .003 was again too tight. but i will carry on and go 0.006. I will try again tomorrow and let you know.