Suggestions on how to open a frozen chuck on a hand drill

Put it in a vice and tap the jaws, with a piece of wood on the jaws and tap the wood with an hammer.

Try submerging the chuck in a small bowl of thin oil for a day or so. I have done this several times with good results.

I'd start by spraying the chuck with "PB Blaster".

sounds like this stash of tools is just right for setting up an electrolysis derusting rig. it's cheap, works REALLY well, and is easy and non-toxic.

The first thing I'd try is to clamp it in a vise with the chuck up, then squirt some penetrating oil (e.g. Liquid Wrench or CRC 5-56, *not* WD-40) onto the jaws of the chuck and allow it to run down inside. Repeat a couple of times, a few hours apart, then allow it to sit there overnight, and try again in the morning.

Wow--these are a bunch of good suggestions (and probably ones I should have thunk of on my own!). I am sure one or a combination of these will do the trick.

Thanks a lot!!

Try freezing it. If no go, try heating it. Alternate the two.

Don't heat it too much - i.e. not so much that you temper the metal.

Personally, I'd throw LOTS of thin oil on it and let it sit overnight... Maybe even penetrating oil like Kroil. BUT when it was finally moving, I'd lube the heck out of it.

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Soak it for a couple of days in Kroil from Kano Labs.

Lew

Doug Miller (alphageek at milmac dot com)

i have often seen WD-40 recommended for freeing up stuff. would be grateful to hear why you think its not so good please.

I use a lot of WD40 for many things, but much prefer Kroil from Kano Labs to get corroded (rusted) items apart.

Lew

Just for the record, the jaws weren't rusted shut. I sprayed a ton of WD-40 all over the chuck and let it sit for about 15 minutes. There was one heck of a lot of black gunk that I assume was old oil and dirt that came out. Once I scrubbed it with an old toothbrush and wiped it clean, I still needed to push the jaws open the first 3 or 4 times I loosened the chuck but thereafter, the jaws opened and closed very nicely.

So in this case, WD-40 seemed to do the trick!

Lew Hodgett wrote: