I'm trying to finish up a piece of heavily spalted maple, the wood is already dry. The plan is to finish it with shellac. But it has a few cracks that I would like to fill. Q1 - Is epoxy the best to use for filling? I have some high strength West Systems left over. Q2 - To keep the filled spot from spreading and causing staining when I finish, should I apply shellac first, then fill the cracks? or Fill first and finish second?