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FED 387 · 07-20-2019, 01:30 PM

Carbide or Cobalt drill bits----tungsten bit if you can find one ---theses bits are very brittle so use care when handling or using them---- VERY slow speed lots of oil or coolant,----- drill press only NO HAND DRILLING so as to not work harden the material or ruin the drill bit-- DO NOT RUSH TAKE YOUR TIME doing it--better yet put it in a mill and use a carbide cutter to make the hole --FED 387

07-20-2019, 01:30 PM	#17
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,423 Likes: 541 Liked 333 Times in 180 Posts	Re: rear housing moving ? Carbide or Cobalt drill bits----tungsten bit if you can find one ---theses bits are very brittle so use care when handling or using them---- VERY slow speed lots of oil or coolant,----- drill press only NO HAND DRILLING so as to not work harden the material or ruin the drill bit-- DO NOT RUSH TAKE YOUR TIME doing it--better yet put it in a mill and use a carbide cutter to make the hole --FED 387