Best techniques for cracking rust sealed screws?

I saved a homeowner drill that I’m estimating to be late twenties from the garbage yesterday and I want to clean it up. However, in order to open it I need to take off the collet, which is rusted shut. What is the best way to open the collet screws? I’d rather not use anything very harsh, simply because I want to degrade the metal as little as possible. Thanks!

spencer

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Penetrating oil but if your worried about damage to the metal here is a recipe that someone turned me onto and it works…..50/50 mix of acetone and dextron/mercron automatic trany fluid in a spray bottle and shake before spraying, let it soak for about 10 minutes.

Look up Kano Kroil. Has amazing reviews on just about every site that sells it.

Thanks!

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Don’t know much about products nowadays, but back in the day we would soak things in Marvel Mystery Oil. They actually still make it!

Like they said, try penetrating fluid that has a rust dissolver.hit the screw head with a hammer to help break the rust. Use a screw extractor kit or fluid (even a rubber band). Heat works too, just don’t burn anything that’s flammable

My best tool for rusted screws is this one below:

http://www.engineer.jp/en/products/pz58e.html

[External image (www.engineer.jp), not copied]

I was a bit reluctant at first but then I’ve tried it at home and on rusted screws under a washing mashine it yup, it works like a charm. VERY impressed.

A bigger size would be this one:

http://www.engineer.jp/en/products/pz59e.html

[External image (www.engineer.jp), not copied]

You also have the Loctite Freeze and Release but I’ve never tried it so can’t comment.

http://www.henkelna.com/industrial/product-search-1554.htm?nodeid=8797940809729

hemdale wrote:

My best tool for rusted screws is this one below:

http://www.engineer.jp/en/products/pz58e.html

[External image (www.engineer.jp), not copied]

I was a bit reluctant at first but then I’ve tried it at home and on rusted screws under a washing mashine it yup, it works like a charm. VERY impressed.

A bigger size would be this one:

http://www.engineer.jp/en/products/pz59e.html

[External image (www.engineer.jp), not copied]

You also have the Loctite Freeze and Release but I’ve never tried it so can’t comment.

http://www.henkelna.com/industrial/product-search-1554.htm?nodeid=8797940809729

Funny you mentioned these, I discovered vampliers just recently, we have a thread going about these, just ordered a pair but they take so long to come in.

Jimbo

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If your talking about the bolt inside the chuck that holds it to the drill then I’m 99% sure that is reverse thread. Clockwise to loosen it. They can be pretty stubborn even without rust

NERemodeling wrote:

If your talking about the bolt inside the chuck that holds it to the drill then I’m 99% sure that is reverse thread. Clockwise to loosen it. They can be pretty stubborn even without rust

+1 The screw in the Chuk is reverse threaded. Most of them are hex screws, but being that old that’s probably not the case.

Let’s see some pics of this thing