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Welding extensions on drills

R

Russ from MN

Well-known Member
Location
Bemidji MN
Last week there was a discussion about welding extensions on drills, or any other piece of round stock. I made this up after seeing one that a co-worker had made, and it works very well. If they are the same diameter just clamp and weld, if their different shim accordingly. I tack one side, then turn it and clamp, by doing a little bit at a time they come out very straight.
a270504.jpg

a270505.jpg

a270506.jpg

a270507.jpg
 
For those really reaching out there kind of jobs. Do you have any trouble with the flutes plugging up? Nothing like drilling a real deep hole and you hear SNAP!! Cross drilling a pivot bolt for a garden tractor front end. Man I hate that. Had to go get another case 5 bolt.
 
When drilling deep holes you have to back out very often, and use lots of lube. As I said last week, one time another fellow and I drilled about 2 feet in the end of a 4 15/16 shaft, it took awhile!
 

I have made drill extensions by turning the drill shank to fit a hole bored in the end of a rod and silversoldered them together. The silversolder is plenty strong in this application. It is what they use to fasten gears to shaft in transmissions.
Elmo
 
I have always done it the way you suggest with good results. I have also extended taps and hex keys by silver soldering them into a hole in a rod.
 
(quoted from post at 20:26:08 06/15/18) If I did that it wouldn't work. It would end up with the angle welded to the bit.
Click to expand...

There needs to be a "window" in the valley of the angle iron where your welding.
Otherwise the weld will mess up the straightness as you rotate and clamp it again to ad more weld.

I think the one pic shows that kinda.
 
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