: Rob, I used MAS slow-cure epoxy which has cured for about 5 months. I
: carefully washed and cleaned with the recommended solvent prior to
: applying. Interlux tech support could only recommned using a badger hair
: brush (which I did), and making sure not to use silicon coated sandpaper
: (I use 3M and Norton garnet). Could this just be a bad batch of varnish?

If it's not working after all that I'd say try something different.

The two part finishes seem great. I used them only a couple times. I really did not like the overpowering toxicity of the materials. It seemed like a respirator was not enough. My wife kicked me out of the house to remove my clothes the odor was so strong.

These finishes are very hard. That also makes them harder to repair and recoat.

Good Luck!

Rob