spin_dry Posted June 26, 2022 Share Posted June 26, 2022 Any recommendations? What type of bit? Quote Link to comment Share on other sites More sharing options...
Gold Member EvilBird Posted June 26, 2022 Gold Member Share Posted June 26, 2022 https://www.toolsource.com/spotweld-cutters-c-330_477/boron-steel-stc-spot-weld-drill-bit-for-uhss-ahss-and-boron-s-p-119262.html Quote Link to comment Share on other sites More sharing options...
spin_dry Posted June 26, 2022 Author Share Posted June 26, 2022 4 minutes ago, EvilBird said: https://www.toolsource.com/spotweld-cutters-c-330_477/boron-steel-stc-spot-weld-drill-bit-for-uhss-ahss-and-boron-s-p-119262.html That's a spot weld cutter. I need to hole. I found something the try. 1 Quote Link to comment Share on other sites More sharing options...
Gold Member EvilBird Posted June 26, 2022 Gold Member Share Posted June 26, 2022 1 minute ago, spin_dry said: That's a spot weld cutter. I need to hole. I found something the try. gotcha ...well ive used those before and they work mint for spot welds Quote Link to comment Share on other sites More sharing options...
spin_dry Posted June 26, 2022 Author Share Posted June 26, 2022 2 minutes ago, EvilBird said: gotcha ...well ive used those before and they work mint for spot welds Ive never had to drill through it before. My standard bits are useless. It's like drilling into a UFO. 1 Quote Link to comment Share on other sites More sharing options...
Gold Member Stephen Hawking Posted June 26, 2022 Gold Member Share Posted June 26, 2022 (edited) A high cobalt content drill, some type of coating either TiN or TiCN is better. Carbide is best but if hand drilling they can shatter in the flute area, carbide tipped would work better. Either way slow rpm and oil. Edited June 26, 2022 by Stephen Hawking Quote Link to comment Share on other sites More sharing options...
spin_dry Posted June 26, 2022 Author Share Posted June 26, 2022 23 minutes ago, Stephen Hawking said: Either a high cobalt content drill, some type of coating either TiN or TiCN is better. Carbide is best but if hand drilling they can shatter in the flute area, carbide tipped would work better. Either way slow rpm and oil. Good advice. I was using too much speed. Quote Link to comment Share on other sites More sharing options...
Platinum Contributing Member Rigid1 Posted June 26, 2022 Platinum Contributing Member Share Posted June 26, 2022 What are you doing with that spinner? Quote Link to comment Share on other sites More sharing options...
spin_dry Posted June 26, 2022 Author Share Posted June 26, 2022 1 hour ago, Rigid1 said: What are you doing with that spinner? Installing a bed using 8020 extruded aluminum beams. 1x3” beams run laterally down both sides of the van wall. I’m having to drill holes to install plus nuts to secure the L brackets. I guess in a van it would be considered a D pillar in the rear? It’s high strength steel. I would imagine ford uses it to protect in a rollover. 1 Quote Link to comment Share on other sites More sharing options...
Platinum Contributing Member Skidooski Posted June 26, 2022 Platinum Contributing Member Share Posted June 26, 2022 7 hours ago, spin_dry said: Installing a bed using 8020 extruded aluminum beams. 1x3” beams run laterally down both sides of the van wall. I’m having to drill holes to install plus nuts to secure the L brackets. I guess in a van it would be considered a D pillar in the rear? It’s high strength steel. I would imagine ford uses it to protect in a rollover. Yep Quote Link to comment Share on other sites More sharing options...
Pete Posted June 26, 2022 Share Posted June 26, 2022 A clapped out mini van with boron steel. ok.. Quote Link to comment Share on other sites More sharing options...
ArcticCrusher Posted June 26, 2022 Share Posted June 26, 2022 22 minutes ago, Pete said: A clapped out mini van with boron steel. ok.. It's got to survive a missle attack. 1 Quote Link to comment Share on other sites More sharing options...
spin_dry Posted June 26, 2022 Author Share Posted June 26, 2022 52 minutes ago, Pete said: A clapped out mini van with boron steel. ok.. You don't even know what boron steel is, you fucking halfwit. The bag of spuds I bought yesterday have a higher IQ. 1 Quote Link to comment Share on other sites More sharing options...
Pete Posted June 26, 2022 Share Posted June 26, 2022 Just now, spin_dry said: You don't even know what boron steel is, you fucking halfwit. The bag of spuds I bought yesterday have a higher IQ. Yes no idea Quote Link to comment Share on other sites More sharing options...
spin_dry Posted June 26, 2022 Author Share Posted June 26, 2022 13 hours ago, Stephen Hawking said: A high cobalt content drill, some type of coating either TiN or TiCN is better. Carbide is best but if hand drilling they can shatter in the flute area, carbide tipped would work better. Either way slow rpm and oil. I had a some old Hanson bits still in the wrapper from 15-20 years ago. With a little oil they broke right through. I swear that Hanson's were some of the best commercially available bits ever sold. Apparently Irwin bought em out. They aren't the same now. Quote Link to comment Share on other sites More sharing options...
Carlos Danger Posted June 26, 2022 Share Posted June 26, 2022 Cobalt jobber bits will go through most tough materials it is a matter of speeds and feeds. Carbide drills are a last resort but are about as high up the food chain as drills for metal get. My daily duties involve putting holes in some of the toughest materials known. Inconell, hastaloy X, heat treated 410 SS the list goes on. Quote Link to comment Share on other sites More sharing options...
Carlos Danger Posted June 26, 2022 Share Posted June 26, 2022 A cobalt uni bit could be your best friend if it is thin sheet metal. Quote Link to comment Share on other sites More sharing options...
ford_428cj Posted June 26, 2022 Share Posted June 26, 2022 4 hours ago, spin_dry said: You don't even know what boron steel is, you fucking halfwit. The bag of spuds I bought yesterday have a higher IQ. Boron Quote Link to comment Share on other sites More sharing options...
Carlos Danger Posted June 26, 2022 Share Posted June 26, 2022 5 hours ago, spin_dry said: You don't even know what boron steel is, you fucking halfwit. The bag of spuds I bought yesterday have a higher IQ. it is just like 1018 just it can be surface hardened after it has been shaped. It ain't all that to drill through as it's rockwell number is still in the 40s even after it gets heat treat. Quote Link to comment Share on other sites More sharing options...
spin_dry Posted June 26, 2022 Author Share Posted June 26, 2022 19 minutes ago, Carlos Danger said: it is just like 1018 just it can be surface hardened after it has been shaped. It ain't all that to drill through as it's rockwell number is still in the 40s even after it gets heat treat. I had to run over and visit a buddy that owns a body shop. He loaned me his set of carbide bits. He's spent years working with the stuff. Even these bits properly oiled and run at optimal speed are good for 40-50 holes. DeWalt cobalt bits don't touch the stuff. Quote Link to comment Share on other sites More sharing options...
Carlos Danger Posted June 26, 2022 Share Posted June 26, 2022 4 minutes ago, spin_dry said: I had to run over and visit a buddy that owns a body shop. He loaned me his set of carbide bits. He's spent years working with the stuff. Even these bits properly oiled and run at optimal speed are good for 40-50 holes. DeWalt cobalt bits don't touch the stuff. If the bits you are getting come out of home Depot you are not really doing your best. Jobber quality bits made of cobalt from MSC or McMaster Carr or pan American is your best bet. If it is just sheet metal I would get a 1/8 carbide make a pilot hole and run a uni bit for a size. Less chance you get in trouble. 1 Quote Link to comment Share on other sites More sharing options...
Carlos Danger Posted June 26, 2022 Share Posted June 26, 2022 If you end up in trouble let me know I will throw you a line of goodies for getting holes made. Quote Link to comment Share on other sites More sharing options...
XCR1250 Posted June 26, 2022 Share Posted June 26, 2022 6 hours ago, Carlos Danger said: Cobalt jobber bits will go through most tough materials it is a matter of speeds and feeds. Carbide drills are a last resort but are about as high up the food chain as drills for metal get. My daily duties involve putting holes in some of the toughest materials known. Inconell, hastaloy X, heat treated 410 SS the list goes on. I know the Titanium shafts I used were hard to drill and machine. Quote Link to comment Share on other sites More sharing options...
spin_dry Posted June 26, 2022 Author Share Posted June 26, 2022 46 minutes ago, Carlos Danger said: If you end up in trouble let me know I will throw you a line of goodies for getting holes made. Thanks. I’m pretty sure that the remainder of the drilling will be mild steel. I cut a hole in the floor for the heater this afternoon. A hole saw sliced through it like butter. Quote Link to comment Share on other sites More sharing options...
Carlos Danger Posted June 26, 2022 Share Posted June 26, 2022 1 hour ago, XCR1250 said: I know the Titanium shafts I used were hard to drill and machine. Titanium is tough but it ain't Hastaloy. Most of the disks in the hot section of a jet are hastaloy x. We had an engine have a catastrophic failure where at full power the main shaft split and the disk went through the case and the enclosure and when it got outside it almost sliced a Honda accord in half and then took off up the hill next to the plant where it went through a chain link fence. The Disk was scrap but it was in remarkably good shape considering what it had been through. 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.