Re: Protecting threads in sandblasting

Posted by Al English on February 07, 2001 at 05:58:24 from (24.30.29.47):

In Reply to: Protecting threads in sandblasting posted by Hendrik on February 07, 2001 at 04:54:39:

Hi Hendrick, I'm sorry to contradict bob, but we sandblast a lot of stuff at my shop. We use electrical tape on male pins, shafts, studs, etc. Duct tape will also work, but not as well. On female threads a cork, or a ball of tape stuffed in the hole will work, rubber stoppers are excellent. No matter what you use, all threads must me completely cleaned of grit. Blow compressed air directly into each hole, do this before painting is done, and watch your eyes. If threads are blasted their original smooth finish is damaged. It doesn't happen every time, but fasteners with blasted threads can seize together like they were welded. This happens more often on smaller bolt sizes, so possibly bob was blasting larger equipment. This is not textbook theory, I removed my full share of seized fasteners with blasted threads. Considering the problems just one frozen fastener can bring, it's not worth taking a chance. Good luck.....Al English

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• Re: Re: Protecting threads in sandblasting Alvin 19:16:04 02/08/01 (0)

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