marshalltjones Posted November 7, 2013 Report Share Posted November 7, 2013 I recently got an MDF table top for my lathe, and I would like to seal the exposed bottom since it will be in a partially climate-controlled room (garage). What would you use? Oil based primer, shellac?????? Quote Link to comment Share on other sites More sharing options...
rodger. Posted November 7, 2013 Report Share Posted November 7, 2013 I would just use polyurethane. 1 Quote Link to comment Share on other sites More sharing options...
wdwerker Posted November 7, 2013 Report Share Posted November 7, 2013 Sanding sealer. Heck if it's just for the shop a couple of coats of house paint will work in a pinch. 1 Quote Link to comment Share on other sites More sharing options...
JerrySats Posted November 7, 2013 Report Share Posted November 7, 2013 for shop things i just use a few coats of sanding sealer . Quote Link to comment Share on other sites More sharing options...
marshalltjones Posted November 8, 2013 Author Report Share Posted November 8, 2013 Isn't sanding sealer just shellac? Quote Link to comment Share on other sites More sharing options...
JerrySats Posted November 8, 2013 Report Share Posted November 8, 2013 Isn't sanding sealer just shellac? pretty much . I think its a thinner version of it . Maybe a 1.5 lb, cut ! Quote Link to comment Share on other sites More sharing options...
Tkf530 Posted November 8, 2013 Report Share Posted November 8, 2013 Isn't sanding sealer just shellac? Not always. Sometimes its a diluted clear coat. Quote Link to comment Share on other sites More sharing options...
missioninwood Posted November 8, 2013 Report Share Posted November 8, 2013 I use glue-size for the end "grain." Oil based primers/sealers work best on MDF from my experience. Quote Link to comment Share on other sites More sharing options...
Rapid Roger Posted November 9, 2013 Report Share Posted November 9, 2013 My workbench / assembly table top is two layers of MDF and I coated it with two coats of polyurethane and two coats of paste wax. I re-wax about twice a year but glue and finish just clean right off without sticking. It has lasted very well for almost eight years. It does have a few dents and scars but, that is what happens to bench tops of any kind if you use them. Rog Quote Link to comment Share on other sites More sharing options...
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