I have been using awlgrip for a long time. Gloss does stay cleaner and is more durable.
The flattening agent is a pain in the ass. It has no shelf life, needs to be agitated pretty frequently while spraying, and will wind up glossy,or patchy looking, if temps are too warm or you use the wrong reducer. Gloss looks awesome with a 50/50 mix of coarse and fine. Looks best if you spray the sand with a primer gun, and let it dry up good before the sealer coat
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