So I have a large (4’x8’) project that I am planning on using a v-bit to cut a number of lines into the sheet. I am basically making a huge board for a board game. My current plan is use 5 mil underlayment which is essentially .2 inches thick, and cut the v-groove .1 inches deep.
I had 2 questions I figured i’d ask before just throwing it on and giving it a try are:
1: There has been talk of the entire bed not being level to the gantry. Is this an issue that I will run into since I am only going .1 inches deep across almost 8 feet of the bed?
2: I know people complain that underlayment is garbage, and I will admit that it is no fancy void free baltic birch. However, I have never done a project that is worth fancy birch plywood. So is there another material that people might suggest besides these two options that is light, inexpensive, and will take a v-cut better than the underlayment?