Quote Originally Posted by Tom Overthere View Post
Jeff: 1:10 glue-to-water with 2lb cut shellac (all mixed together?)
No, either glue size or shellac. Glue size is a lot cheaper though, so I normally use that if I use anything at all. Though it tends to swell the MDF more than the alcohol from the shellac. I've never really had any issues with humidity affecting MDF though (even before I seriously got into woodworking, when I just tinkered).