lumpy resin

My hotcoat resin (in the container) has developed a lumpy texture. I know it’s wax but what can I do about it? It still goes on ok. and sands smooth but I’m not happy. thanx Barge.

My hotcoat resin (in the container) has developed a lumpy texture. I know > it’s wax but what can I do about it? It still goes on ok. and sands smooth > but I’m not happy. If you are sure it’s wax you could possibly heat it slightly to get the wax back to fluid form. Use advice at own risk tho… Maybe the wax melts when you mix in catalyst and the resin heats up which explains why it goes on OK. Better yet, buy some new hotcoat resin. regards, Håvard

I’m not 100% sure but I have had laminating resin do this as well, so I doubt it is the wax. You have resin that has been sitting around too long. I would get some fresh resin and use the lumpy stuff for ding repair.

I’m not 100% sure but I have had laminating resin do this as well, so I > doubt it is the wax. You have resin that has been sitting around too long. > I would get some fresh resin and use the lumpy stuff for ding repair. If your resin is really lumpy from age, it’s hardening in the can. If you want to use it anyway, you can. Just strain it through ladies’ nylon hose. But strain the resin directly before applying it. It will make more lumps pretty quickly. If the lumps are wax buildup at the top of your resin, that’s another problem. Wax separates from resin through evaporation. They disolve parafin in styrene to make sanding aid. Also, most resin is sold with a little styrene. As resin ages the styrene evaporates and the wax has no vehicle to suspend it in the resin, so it separates, and rises to the surface. The problem is worse when you store sanding resin in an open container.

If the lumps are wax buildup at the top of your resin, that’s another > problem. Wax separates from resin through evaporation. They disolve > parafin in styrene to make sanding aid. Also, most resin is sold with a > little styrene. As resin ages the styrene evaporates and the wax has no > vehicle to suspend it in the resin, so it separates, and rises to the > surface. The problem is worse when you store sanding resin in an open > container. You can re-suspend the wax by adding styrene to the resin, and stirring.

You can re-suspend the wax by adding styrene to the resin, and stirring. …Heat it up in a buck of hot water,then strain,then add surfacing agent,and styrene,your done.Herb