سن نقر 3/4 بوصة × ساق 1/4 بوصة – Whiteside 1302 (طلاء AstraHP)

The Astra coating on this bit really does keep the heat down during deep mortising cuts. I just finished cutting a dozen 3/4" deep slots in white oak and the edge still feels crisp.

I was a little worried a 1/4-inch shank might wobble at this diameter, but it stayed rock solid and the AstraHP coating has kept the edge from dulling after a dozen mortises. Worth the money.

Cut four perfectly clean mortises in red oak this afternoon, and the AstraHP coating kept the bit from gumming up even at the end of the run. Shank seated solidly in my router collet with zero chatter, which honestly surprised me for a quarter-inch size. This one's staying in the rotation for good.