With regards to my question this is related to CNC but I thought it may be better suited for the sign forum..

We have been running a bit of work cutting through various masks but a good bit of 813. Some of this has been shallow v-groove over maple, walnut, poplar, and other raw woods (no clear applied, mask straight on the raw wood). I notice when watching the cut that you can see small blisters appear beside the tool from the heat causing the mask adhesive to release. At times we are also not getting a nice sharp cut through the mask. It will tend to be slightly jagged at the edge.

We have been applying the mask, burnishing it down with a squeegee, and tried running various feeds and speeds (pretty fast is our default as the slower you go the more the blister/jagged seems to be). I havent tried an air jet which I thought may keep the whole process (mask and work piece) cooler..

Not a critical issue. We are getting along with the work, but trying to refine.

Thanks