Oh yeah, if nobody mentioned it, with the drill chuck in, any standard bit over about 1/4" will be too long to clear. I have always kept an index full of high quality screw machine bits works great, and up to a point the reduced shank larger bits work, but anything starting at 1/2" and up I use a rotobroach, Cobalt or Carbide usually. Clearance holes I use metric for inch bolts and inch cutters for metric bolts usually works out somehow, lol.
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Mag Drill
- Thread starter Old Doug
- Start date
I am going to get a set of machine length bits first then decide on the rotobroach bits. I got a 5/8 from Fastenal charged it to work they are about the highest place on earth $80.00. That would have been a big part of a set from any were else.
I'm sure there are cheaper places, but I usually order from MSC for cutters, taps, and quality drill bits. They offer a range of quality options typically. Truck frames are probably what, 50ksi or better? I know I've played hell getting drill bits through some. The plate we usually use for everything basically is 100ksi, doesn't mean it's hard to machine but still it ain't mild steel so the Ebay cutter sets don't last long. Have fun!
I assume these 20mm cutters are a clearance hole for 3/4 bolts and were bought in great quantity but dont really know 13 dollars including shipping is a steal though I have arm loads of them stashed
https://www.ebay.com/itm/Copperhead...723353&hash=item4b7567fd57:g:2FwAAOSwuxtc00KP
I have used lots of other cutters off ebay and have been impressed what the cheapest cutter can do for you I'm not drilling repetitive quanitys of holes so I dont wear them out fast just so handy to have lots of the cheaper ones around of differnt sizes
https://www.ebay.com/itm/Copperhead...723353&hash=item4b7567fd57:g:2FwAAOSwuxtc00KP
I have used lots of other cutters off ebay and have been impressed what the cheapest cutter can do for you I'm not drilling repetitive quanitys of holes so I dont wear them out fast just so handy to have lots of the cheaper ones around of differnt sizes
Absolutely, I use a 20mm for a 3/4" bolt and 13/16" for a 20mm bolt. Those carbide cutters are the cat's ass and the 20mm run me around $65 bucks a whack plus shipping! I've never run across a deal like that anywhere before, let alone on Ebay. Thanks! Ordering a shoebox full now!
I order myself two I've broke some of the best drill bits made personally I like a good concrete bit for drilling hard stuff ar500 for example. It works but takes forever
JLarson
Senior Member
I buy the carbide cutters since we do a lot or stainless pipe with a strap on v adapter and wear plate drilling. There's a place in town that sharpens and retooths them for a small fee.
Retooth? I figured if the carbide was busted they were scrap, though I have a bucket full of sizes for resharpening. Nobody I can find in Oregon resharpens, I send them out in batches to a guy in Iowa. Can I get a name in AZ?
The propane guys ordered a new propane pump and got the wrong one it had to do some fab work and got to try out my new drill i ordered a set of short drill bits a must. It worked great i am very happy with it. one more job and it will pay for it self. I wish there was some were local that stocked rotobruch bits i need to order a set or at lest the populer sizes.
old-iron-habit
Senior Member
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- Moose Lake, MN
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- Retired Cons't. Supt./Hospitals
That is one thing that is handy about the heavy old Milwaukee. The motor and pinion shafts have various mounting configerations that allow it to accomondate different length tooling and even allows one to reach futher away from the base if needed. it has Allen headed machine screws for adjusting.
I am a hour from a town that has a fatenal thats the only place that stocks rotob bits then about a a 1 1/2 hours from KC Mo. I also have a big Milwauke its will do alot of things but its very heavy . I drilled several holes in a 8"x 4" plate the big drill wouldnt even set on it. I am glade i have both they both have there place .
colson04
Senior Member
Milwaukee makes an 18volt Brushless Mag Drill now. I just stumbled across this video a little bit ago. Probably not what you're looking for at over $2500+
old-iron-habit
Senior Member
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Better tie that one off for when the battery goes dead. Could be pretty darn handy in some places.
Is the mag a permanit one ? The salvage store here had one it was a milwake but it was smaller. A buddy bought it he liked tools but was in bad shape health wise and died before he ever used it. It sold cheap at his auction but i didnt like the battery part.
Be cheaper to pack along a generator.
colson04
Senior Member
I watched the video before I looked up how much they were. After I saw the price, I no longer saw the value.
old-iron-habit
Senior Member
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- Nov 22, 2012
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- Moose Lake, MN
- Occupation
- Retired Cons't. Supt./Hospitals
I just watched the video. How in the heck do they get the magnet, probably permanent, to be on, half strength on, or off, without a battery in the drill? I'm confused.