As I have stated before, I used the painters tape and a glue stick for years and I swore by it UNTIL I tried just spraying my patterns and putting directly on the wood. After I finish cutting out my pattern , I simply brush on paint thinner or mineral spirits and wait about 15 seconds and the pattern almost falls off on it's own, leaving what looks like a paper cut pattern. All in one piece. After I remove the pattern I run my finger over the wood, if there is any feel of residue on the wood, I dampen a cloth and run it over the wood , removing any residue that May be left behind. I find that any residue that gets left behind happens when I get in a hurry and try to remove the patter without waiting or if I have sprayed my pattern with an over needed amount of glue. The good thing is I never need to peel those numerous tiny pieces of painters tape from a fret work piece that has several hundred holes in it. It also does not have those tiny slivers of wood coming off any longer.
I buy my spray glue at Harbor Freight because they have a good brand at a really good price. Under ?$10 and the size is double others I see on the market. The brand is CRC. If you are not familiar with the company, let me tell you they have been around for a long time and I have been using their products since 1978.
Dick
heppnerguy