Where do you guys get your sandpaper for lapping your heatsinks? I hit all the hardware stores and hobby shops in my area and the finest stuff I could find is only 400. I can't find any 800-1200 stuff anywhere.
My hardware store sold 1200, thanks to the above posts though as i need higher. Odd that your Hardware store dosent sell higher than 400, dosent sound like much of a hardware store to me.
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