Best drill bits for frames by brand and type
Hotshot
Joined: Oct 2004
Posts: 15,882
Likes: 88
From: Durham NC
Yes, you can use bits after they've turned blue if you grind them back far enough to get back into the hardened steel (the blue color tells you that you have gotten the bit hot enough to destroy the temper in that portion) but I figured that anyone who has overheated a bit that badly isn't resharpening them anyway or doesn't know how to grind it back and resharpen it without burning it further on the wheel, and the HS steel or TiN coated bits aren't expensive enough to bother with anyhow for someone lacking those skills. I recently purchased a set of Cobalt steel bits 135* splitpoints and think they are wonderful, but I couldn't recommend them to anyone without the sharpening skills and diamond grinding wheels to maintain them nor are they available at most DIY stores. That's why I suggested the TiN coated bits as the best bang for the $$$ and still cheap enough to be considered expendable when dull.
I earn my living with metalworking tools so I am very particular about maintaining them, but unless it's my last one and I need to use it right then, you'll not catch me resharpening a #75 bit!
I earn my living with metalworking tools so I am very particular about maintaining them, but unless it's my last one and I need to use it right then, you'll not catch me resharpening a #75 bit!
Last edited by AXracer; May 19, 2005 at 06:30 PM.
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Post Fiend
Joined: Dec 2003
Posts: 6,658
Likes: 4
From: "Islander"
Irwin Turbomax bits in cobalt have a small pilot and cutting edges parallel with the cutting surface. 1/4" will go thru Ford frame like butta. You can not step drill as you'll loose the pilot, not cheap but after owning a set i'll buy again.
Carl....=o&o>....
Carl....=o&o>....
Elder User
Joined: May 2004
Posts: 601
Likes: 1
From: Rancho Cucamonga ca.
sancho
I've been making / selling drills for the last 25 years.
you asked for brand - type
best brand is precision twist
best type for what your doing is cobalt stub split point.
ask for them by name at any machine shop supply house.
I've been making / selling drills for the last 25 years.
you asked for brand - type
best brand is precision twist
best type for what your doing is cobalt stub split point.
ask for them by name at any machine shop supply house.
Hotshot
Joined: Oct 2004
Posts: 15,882
Likes: 88
From: Durham NC
Originally Posted by Beemer Nut
I drilled out a friends spring hangers with a 3/4" Milwaukee magnetic base drill, it's variable speed, wouldn't be without one.
Carl....=o&o>....
Carl....=o&o>....
Cargo Master
Joined: Jan 2005
Posts: 2,497
Likes: 5
From: Tucson AZ
I don't have one of those but I borrow one from a friend and it is an awesome tool. I think he bought it out of some guy's trunk for $15
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Hotshot
Joined: Oct 2004
Posts: 15,882
Likes: 88
From: Durham NC
Originally Posted by fatfenders56
Actually, the guy's name was Floyd and he was driving a purple Maverick 4-dr with a padded white vinyl top
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