I’d like to drum sand some stock flat before putting it under the router.
I remember from 7th grade shop class we were told never ever do that. So I’ve been faithful many years carefully planning order of operations around the principle.
I think the reason was that abrasive from the belt could get embedded in the wood, then the router bit could hit it and a poorly brazed tungsten carbide cutter would go flying through someones eyeball. One tends to remember safety lessons from a guy with less than the recommended number of fingers.
Then I realized most finish plywood is factory sanded on at least 1 side and I’ve only ever had 1 carbide come off a router bit in wood, and that was after using it on aluminum.
I know sand paper, carbides, and brazing methods have improved since the 80s, so is this still a thing?
Now, looking back, I guess its silly to be reckless enough to chamfer aluminum with wood bits and still be nervous about maybe a piece of sand. I’d still like to hear if anyone has adverse experience with sanding before routing.