Struggling with a tricky miter on a built-in bookcase, I tried a trick with blue tape and a marking knife.

I was fitting a 22.5 degree return on a painted unit and the test pieces kept showing a hairline gap. My buddy in Seattle said to apply tape across the joint line, mark your cut directly on the tape, and then peel it to cut. Has anyone else found a better method for perfect painted miters?

3 comments

3 Comments

charlie_allen1d ago

My Milwaukee track saw with a fine blade finally got my painted miters tight.

adam_nguyen71d ago

Still chasing that perfect miter myself.

the_sean1d ago

Try the tape trick but cut just a hair proud of your line, then sneak up on the fit with a sanding block. Paint adds thickness, so your perfect wood miter might still show a gap after a coat or two. I always test the final fit with a thin smear of wood glue in the joint to act like paint, then sand it smooth.