I am building a few custom “hard” body RC projects and have used these sanding sticks from Alpha Precision Abrasives with very good results. Each sanding stick comes with two different abrasives except for the rod type ones. They do a great job of sanding flat surfaces and well as more complex hard to reach areas and can be used wet or dry. Just a few of the expansive line of abrasives that they offer are shown here.
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