Best way to get a half inch bolt out of a pipe

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Craigv said:
This. I've extracted tools, parts, even rocks and gravel from conduit and DWV pipe with shop vacs.
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Done the rocks, gravel, plaster, and grout that way. Why do other trades like to remove/damage the conduit caps? We usually pig them anyway but I gotta tell ya, we don't get any respect.
 
Cow said:
In the past, we've used a cattle magnet secured to the end of pvc flex.

https://www.amazon.com/Master-Magne...&qid=1538196142&sr=8-1&keywords=cattle+magnet
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Cow magnets are getting harder and harder to find. I try to keep one in every tool box. They make an excellent utility magnet. We use them on the drill rig to check our cutting for metal shavings. It a bad thing when we get metal.

i don’t know how much cow magnets are still used for their original purpose. Years ago when we used steel balance wire, A cow magnet. was fed to every cow. It’s purpose was to catch any stray baling wire that the cow might eat. The magnet would stay in their first stomach and catch metal. The stomach acids would then slowly dissolve the metal wire. Nowadays, everybody used polypropylene baling twine. No magnet needed now.

i really miss baling wire. It was about half again thicker than the tie wire used to tie rebar. You could just about fix anything with baling wire and a pair of pliers. I say a store that actually had a roll of baling wire last summer. But I wasn’t going to pay eighty bucks for it,
 
480sparky said:
Then it WILL grab the rigid pipe.
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Well you gots to hold onto your end of the string chief, at least till you get past the rigid. There is enough room for the magnet to lip around the end of the sleeve.

I like the idea of attaching the magnet if it is a straight shot to the bolt. I suspect the bolt slid a little. If it slid a lot then that may make a fish tape necessary but it would not have to be fiberglass.
 
Dzboyce said:
Cow magnets are getting harder and harder to find. I try to keep one in every tool box. They make an excellent utility magnet. We use them on the drill rig to check our cutting for metal shavings. It a bad thing when we get metal.

i don’t know how much cow magnets are still used for their original purpose. Years ago when we used steel balance wire, A cow magnet. was fed to every cow. It’s purpose was to catch any stray baling wire that the cow might eat. The magnet would stay in their first stomach and catch metal. The stomach acids would then slowly dissolve the metal wire. Nowadays, everybody used polypropylene baling twine. No magnet needed now.

i really miss baling wire. It was about half again thicker than the tie wire used to tie rebar. You could just about fix anything with baling wire and a pair of pliers. I say a store that actually had a roll of baling wire last summer. But I wasn’t going to pay eighty bucks for it,
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They aren't used very much anymore from what I see.

My folks have a small dairy on the coast and coincidentally I ended up over here in Eastern Oregon doing wiring on HUGE dairies and feedlots, and I don't see anyone using cow magnets in cattle.

But, our local feed supply store still carries them, so someone must be buying them?
 
Use a vacuum, if that won’t pull the bolt up, then use the vacuum to pull a string then hook a high power magnet to the string. Pull said string through conduit. Also a conduit piston will most likely push it thru the pipe


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sii said:
Well, I certainly learned a thing today.
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Did you learn why they have that name?

Dzboyce said:
Cow magnets are getting harder and harder to find. I try to keep one in every tool box. They make an excellent utility magnet. We use them on the drill rig to check our cutting for metal shavings. It a bad thing when we get metal.

i don’t know how much cow magnets are still used for their original purpose. Years ago when we used steel balance wire, A cow magnet. was fed to every cow. It’s purpose was to catch any stray baling wire that the cow might eat. The magnet would stay in their first stomach and catch metal. The stomach acids would then slowly dissolve the metal wire. Nowadays, everybody used polypropylene baling twine. No magnet needed now.

i really miss baling wire. It was about half again thicker than the tie wire used to tie rebar. You could just about fix anything with baling wire and a pair of pliers. I say a store that actually had a roll of baling wire last summer. But I wasn’t going to pay eighty bucks for it,
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Regional farm and general supply store in this area still has them in all their stores. I don't know if that many get put into cows though.


1/2 inch bolt with much length at all is going to be more than most shop VAC's will be able to pick up.

Magnet in PVC might work, if too strong of magnet will want to stick to pipe, also the bolt likely has gone past an elbow, so needs to be something that is rigid enough to push through the elbow.

Conduit piston, rag, etc. pulled through on a string should work regardless.
 
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