How To Drill Hard Steel Video

Hi, Im 27 yrs old and a rokie about drilling metal surfaces.
This weekend I'll try to drill a 5/16" into my jeeps body frame (I'm installing side step bars) I just saw the video and i didnt know that oil could help a lot.
Are there any special steps to drill a hole this big into a jeeps frame (91')?

Greetings,

I need to drill some 1/8th inch holes into 3/4 inch mild steel bar stock with a drill press...I was wondering if there are any extra precautions when drilling through such thick steel?
thank you for the great video and site.

Hello!
First of all, great video! I have a question: I need to drill a hole for a thumb stud into a very hard knife blade (about 57 HRC) and I was wondering if that is even possible with normal gear, like a hand drill or a drill press. If not, do I need some really hardcore machinery, like plasma cutters or water jet cutters?

Hi!! I saw your video and thought it was just what I needed. I am putting together a trampoline for my kids but the holes of the trampoline are smaller than the holes in the poles that hold the mesh enclosure. I assembled the trampoline already so I need to make the holes bigger from 3/8 in to 1/2 in. I am also implementing the emery cloth technique... thanks so much for the tips

Thanks a bunch for this video. I wasn't sure how to approach drilling steel, and I'm glad I stopped by here first - I feel much more confident, and I'm glad I know how to do it right now.

Thanks for the video..

To answer the question for anyone who has the same Jeep question as Jim had...

Just follow the directions in this video and use a good quality cobalt drill bit.

I'm not an expert by any measure, but as a Jeep owner, with enough time, you'll eventually be drilling.. Either like me, because it's old and I snap a rusty bolt, or like Jim, because you're adding some accessory. I don't know if this is a Jeep person thing (as in we were like this before and the Jeep drew us in) or just a Jeep thing (as in owning a Jeep turned us into a DIY amateur mechanic).. but there's no going back now - I love that thing.. I've put it's first 200k in the record book, and I'm working on the next 200k.. My dad's cherokee went to 380K before he got rid of it due to rust... the original engine after 380K still ran great though...

Oh, I almost forgot... Remember that drilling an automotive frame (Jeep or otherwise) clean it up real good... and remember that bare metal WILL rust.. especially under a vehicle.

I highly recommend POR-15 (go to Quadratec.com to get it), and if you're bolting through (as in not tapping the hole) I try to paint it on and let it dry... You'll need to make sure you've got a little extra space for the layer of paint, but the stuff is awesome. It is expensive, but worth it!! (I have no affiliation with the company, just stating my opinion based on my own experiences..)

kindly tell me tips for drilling and countersinking on 20 mm plate . hole size is 18 dia with counter sink

thanks
regards
sandhoo

hardness is 400/500 bhn

thanks
regards
sandhoo