I currently often buy materials at Home Depot. If I buy their 1/4" thick sheets of MDF, and stack 8 of them on top of each other, I would expect something that is very close to 2" thick. But it’s not consistent. Sometimes it’s off by as much as 1/8 of an inch. So their 1/4" thick material is not always exactly 1/4", and it’s not consistently too thin or too thick.
Will the Proofgrade material be more consistent in this regards? If I sell a design on the GF store that stacks four 1/4" thick Proofgrade layers, can I count on it being very close to 1" thick? Or will I have to have a parameter in the design for users to enter the “actual” width of the material, measured with calipers?