I have a 390 drill bit that chips the plastic, so I sharpen it and it still does. Any suggestions?
J JTB51 Member Dec 30, 2022 #1 I have a 390 drill bit that chips the plastic, so I sharpen it and it still does. Any suggestions?
J JTB51 Member Jan 25, 2023 #3 Renegade_56 said: probably too sharp Click to expand... Yes you were right. Thanks