Gold & Silver Forum (http://goldismoney.info/forums/index.php)
- Survival Prep (http://goldismoney.info/forums/forumdisplay.php?f=141)
- - Drilling steel (http://goldismoney.info/forums/showthread.php?t=156220)

uranian | 07-16-2007 04:19 PM
Drilling steel Any advice? Drilling holes in a steel car seat frame, tubular steel, i'd guess no more than 2mm thick. holes to be 9mm (third of an inch), i've read that drilling a smaller hole first, then working up to a larger one, is a good idea, as obviously is having a good drill bit (cobalt good?). high speed (RPM) seems generally recommended, a reasonable amount of pressure, lubricant seems a more debated issue. also been told that banging an indent into the steel before drilling, steel punches, are they?, is a good plan.

Infidel | 07-16-2007 04:33 PM
Re: Drilling steel notch steel with anything even nail and hammer apply wd-40 to the bit like the one below http://www.tradetufftools.com/index....oducts_id=1971 put in moderate amount of pressure on the drill

Atahualpa | 07-16-2007 04:52 PM
Re: Drilling steel Drill a pilot hole, use a lubricating oil, and don't use high rpm's.

obtuce duce | 07-16-2007 06:25 PM
Re: Drilling steel I�ve drilled a few holes� well a few thousand is probably more like it. Two mm? you wont need any �lube� for that. Use some if you want to though. Real good for �banging an indent�:http://www.harborfreight.com/cpi/cta...emnumber=91080 Just hold the drill tight, and drill as fast as it will spin. The faster it is spinning the less chance of a hang up when you punch through. (Thin sheet metal only.) Use moderate pressure. If you don�t have a bit like the one in the earlier post, just use two standard bits, the first one half or less the size of the final bit size. Fluids I have used for drilling: Tap Magic Rapid tap WD-40 PB Blaster Kroil Motor oil Hydraulic fluid Marvel Mystery oil LPS (penetrating fluid) Air tool oil Water Coffee (yes) Many others I cant think of now. A 9mm hole in 2mm sheet metal is about as simple as it gets. Now go get it done.:beer: Oh, and that will be two silver oz:9536: OD

All times are GMT -4. The time now is 10:15 AM. |

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2010, Jelsoft Enterprises Ltd.
Copyright = None use it and Link to GIM