Not a bad idea for a starting point, but the potential inconsistency in some non-proofgrade still means experimenting with each material to dial it in.
It should be great for a lot of different materials like stone or glass.
Maybe what we really need is a sheet that aggregates data from others, so everyone could keep their own settings under their control, while making it possible to easily browse and search across the whole collection.
This spreadsheet has probably not been updated for quite some time, but I’ll look for a working link. If you search in the Beyond the Manual section of the forum for settings for a particular material you will probably find helpful tips. Your best bet will always be to test new non Proofgrade materials.
Is there something in particular you are looking for right now?
I just picked up some RevolutionPly from Lowes. It is a 5mm underlayment with a … unque surface look. I had seen it mentioned on a couple posts and picked up some damaged sheets at a discount.
I will give it a shot and post my cut speeds once I have dialed it in. I will start it at 250/Full unless you have a suggestion for a better starting point.
Underlayment is the worst material I have worked with. Horribly inconsistent. It’s designed for leveling floors before tiling and such, and full of all kinds of filler, much of which is not laserable. What I had was 3mm it and it awful to use.
I hear you @eflyguy. Underlayment is questionable under the best conditions. So far the inner layers are looking good, the board feels strong, and the thickness seems fairly consistent between the 3 panels I recently purchased. In fact, the Birch “project panels” they sell were more expensive and less consistent thickness and quality.