Big box of MDF - good deal?

[evansd2]

Masking material for non-proofgrade items

At long last, my GF arrived the other day, and I got down to business. One of the first non-proofgrade materials I want to try is Baltic birch, since I’ve seen posts from plenty of people around here who have had good results with it. But I also want to mask the wood prior to engraving to minimize scorching. So what do you all use? I have a roll of wide blue painter’s tape that could be a likely prospect, but I’d like to run that past more chemically savvy opinions here first before I create…

A good start.