Good to get me oriented to the task. Thanks for posting. I sometimes use drills with reduced shank - they are all 1/4" diameter shank regardless of drill size. So they fit into my drill bit extension accessory which has a 1/4" diameter hole with grub screws, and reaches 350 mm. For longer extension - say one metre, like hard to reach holes on the motor car. I use a peice of dead straight hard copper tubing of 1/2" diameter or similar. I make a sleeve to accomodate the internal diameter of the tubing so that it fits the drill. Then I silver braze the thing together. I run the drill slower than normal of course.
There is an other way to extend a drill. Turn the soft chucking end of the drill to a smaller diameter for 1/2" length. Take a rod of the same diameter and drill a hole slightly larger that the turned end of the drill. Use the "V" Block clamp method to braze the drill to the rod. The brass will flow in the gap. Clean up the braze.
This is just what I’m looking for except I like most folks don’t have a lathe so the v block won’t help because 2 different diameter’s won’t be in the same plain
Cool vid Bob. I do not know enough about the difference or the nuances of welding vs brazing - however I kind of know that brazing is not as strong (it uses brass). Would you have (had to?) welded it if you were drilling into steel?
Welding a HSS drill bit is not simple as pre and post heat control is needed as well as the right rod, as well as it being mild steel joined to HSS. In short a lot of mucking around. Brazing is a relatively low temperature process compared to welding and does not affect the HSS except in the area that is brazed. What this means in practice is that you don't have to worry about cracking etc. I would use welding for a large drill say 13 mm or more, but this method works fine on small drills for steel. Probably should have drilled steel for the video, but I extended the drill so I could drill a long hole in that nylon stock, so that became the example footage.
It was the drill that went flying and as I recall it took a while to find where it had got to, so you have a few seconds of fright whist the thing goes flying and with a small object like that several minutes of searching to find where it went to :-)
I wish I was a machinist equipped and capable enough to build the tools to get what I need done. But instead I am either pulling out the credit card or redesigning the problem area to be less good. Less good, I wish I could do good English too 😂
how well does the joint hold up on the welded extension? I often drill metal, and occasionally the bit catches, and actually spins the drill from my hand, do you think the weld would withstand that kind of force?
Yes it would stand that kind of force, but with the caveat here that the drill is only about 3/16" and the shaft will probably bend if you put too much pressure on it. Showing my age here, but this is an old school method of extending drill shanks that we used back in the day when I was a boy tradie, mainly because we had to, because a proper long one was at best about 2 to 3 weeks to get from Melbourne or Adelaide (our industrial heartland) or 12 weeks or more from England :-)
IT'S ALL COOL AND ALL BUT, ITS NOT A SOLUTION FOR ANY JOE BLOW LIKE 99.99% OF US! YEAH DO IT LIKE THIS... BY YOURSELF 200000$ MACHINERY TO FIX A 2$ DRILL BIT THAT IS TO SHORT! MAKE PERFECT SENSE! MAN WE DON'T LIVE ON THE SAME PLANET! 😡
Thank you sir
Thankyou for watching the video, greqatly appreciated 👍👍👍
Wow you just made your own drill extension! Amazing
Thankyou, and thanks for watching.
Good to get me oriented to the task. Thanks for posting.
I sometimes use drills with reduced shank - they are all 1/4" diameter shank regardless of drill size. So they fit into my drill bit extension accessory which has a 1/4" diameter hole with grub screws, and reaches 350 mm.
For longer extension - say one metre, like hard to reach holes on the motor car. I use a peice of dead straight hard copper tubing of 1/2" diameter or similar. I make a sleeve to accomodate the internal diameter of the tubing so that it fits the drill. Then I silver braze the thing together. I run the drill slower than normal of course.
Thanks for sharing your approach, good to know 👍👍👍
Good job
Thanks 👍👍👍
Thx mate for the lesson! Just what I needed 💪👏👏
Thankyou
Well this certainly didn’t help me because I do not have a machine shop on hand… However! I really like Bob, he’s fantastic!
Thankyou for your kind comments, glad you watched the video 👍👍👍
There is an other way to extend a drill. Turn the soft chucking end of the drill to a smaller diameter for 1/2" length. Take a rod of the same diameter and drill a hole slightly larger that the turned end of the drill. Use the "V" Block clamp method to braze the drill to the rod. The brass will flow in the gap. Clean up the braze.
Sounds like a plan, I will try that next time I extend one, thanks for the input.
yeah sound more affordable, dose not need 200000$ machinery to fix a 2$ drill bit that is too short 🤣
Also good idea. Would loctite work too? So it can be undone by less amount of heat.
Love you sir
Thankyou.
Thank you Bob 👍
If you don’t have a long drill bit probably don’t have a lathe
Good point 😄
Useful techniques.
This is just what I’m looking for except I like most folks don’t have a lathe so the v block won’t help because 2 different diameter’s won’t be in the same plain
Thanks for watching the video. Yes, you are right the extension and the drill need to be about the same diameter to work with the v blocks.
Whitedog you are my role model
Helpful video
Great, all I need to do now is buy one of those fancy and expensive machining tools to make myself an $8 drill bit extender.
But think of all the other fun things you can make with the fancy machining tools 😀
Cool vid Bob. I do not know enough about the difference or the nuances of welding vs brazing - however I kind of know that brazing is not as strong (it uses brass). Would you have (had to?) welded it if you were drilling into steel?
Welding a HSS drill bit is not simple as pre and post heat control is needed as well as the right rod, as well as it being mild steel joined to HSS. In short a lot of mucking around. Brazing is a relatively low temperature process compared to welding and does not affect the HSS except in the area that is brazed. What this means in practice is that you don't have to worry about cracking etc. I would use welding for a large drill say 13 mm or more, but this method works fine on small drills for steel. Probably should have drilled steel for the video, but I extended the drill so I could drill a long hole in that nylon stock, so that became the example footage.
6:40 = i hate when that happens. LOL, it always seems like i have a firm grip, until something catches, and then goes flying...
It was the drill that went flying and as I recall it took a while to find where it had got to, so you have a few seconds of fright whist the thing goes flying and with a small object like that several minutes of searching to find where it went to :-)
I wish I was a machinist equipped and capable enough to build the tools to get what I need done. But instead I am either pulling out the credit card or redesigning the problem area to be less good. Less good, I wish I could do good English too 😂
how well does the joint hold up on the welded extension? I often drill metal, and occasionally the bit catches, and actually spins the drill from my hand, do you think the weld would withstand that kind of force?
Yes it would stand that kind of force, but with the caveat here that the drill is only about 3/16" and the shaft will probably bend if you put too much pressure on it. Showing my age here, but this is an old school method of extending drill shanks that we used back in the day when I was a boy tradie, mainly because we had to, because a proper long one was at best about 2 to 3 weeks to get from Melbourne or Adelaide (our industrial heartland) or 12 weeks or more from England :-)
Nice work Bob! 👍
PS, I like stuff 😊
I guess for most of us the answer is go buy a damn longer bit
We make stuff
Who has lathes like that just lying around their garage? Not practical for 99.9% of us out there....
Thanks for watching anyhow 🙂
U got a vice and a drill? Boom ghetto lathe better yet 2 vices
Use a saw rail and slide 1 vice along with drill bit and have work peice on a drill in a second vice easy
A lot of people have lathes. Save up some money get yourself a mini lathe.
I make stuff
IT'S ALL COOL AND ALL BUT, ITS NOT A SOLUTION FOR ANY JOE BLOW LIKE 99.99% OF US! YEAH DO IT LIKE THIS... BY YOURSELF 200000$ MACHINERY TO FIX A 2$ DRILL BIT THAT IS TO SHORT! MAKE PERFECT SENSE! MAN WE DON'T LIVE ON THE SAME PLANET! 😡
Thanks for your comment.
Mini lathes can be had for 500$. Stop drinking beer for a year and you'll buy one with the money you save.