A
Anonymous10/17/25, 21:16No.2951377Are left hand drill bits worth it?
When I try to remove severed bolts using a regular drill bit and bolt extractor, it almost never works. It only works like 1 out of 10 times if I’m lucky.
Do left drill hand drill bits work? How many times out of 10 would you estimate does it work?
19
Replies
A
Anon10/18/25, 00:47No.2951418
Or is it better to weld a nut onto most broken bolts or screws and remove it by turning the nut? I see that method used a lot in Youtube videos.Is there a way to weld a nut without using a huge acetylene tank setup? I work in the railroad industry and it is not feasible to get that everywhere.
A
Anon10/18/25, 01:27No.2951423
They always force the rest of the material into the sides for me and just creates a through hole but a mess of fucked shit
A
Anon10/18/25, 10:16No.2951485
If the screw is loose enough and you just need to get a bite on it, then they work pretty good. If it's stuck, I usually just try to drill it out and retap. A
I'd say a small set is worth it just to have another option for dealing with broken fasteners.
A
Anon10/18/25, 17:27No.2951543
I'm glad I don't live in the rust belt. Also I'm not 100% retarded so I can feel when a bolt is not coming out, and stop and re-asses the situation before continuing. Usually a bit of heat and impact before the bolt head snaps off is all that is needed to keep from breaking it and getting it to come out in one piece. If it is a through hole with a nut on the back side, fuck it. Break that piece of shit and punch it out the other side. Have had decent luck with extractors. Sometimes you just gotta drill out and re-tap.
A
Anon10/18/25, 21:20No.2951603
>295155ate
theyll let anybody be a millwrong anymore. apprenticeships existed for a reason
A
Anon10/19/25, 01:22No.2951644
Where can I find a good set of cobalt drill bits?Pic is from my local hardware store. I think they sell sets from Drillco in a hard Huot drill index case. But they are excessively expensive.
