I have found a new way to use my festools, I am refinishing old kitchen cabinets for my dauhter’s house. i used my rotex, finishing sander, sandpaper, 80,120 grit. the cabinets are solid maple, no knots, they look beautiful. They were not all evenly worn, stained, some had very dark stains. I am wondering how to varnish them. I read about putting a sealer first. the cabinets are for my daughter’s kitchen.