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post #1 of (permalink) Old 08-24-2004, 07:18 AM Thread Starter
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Make your own thread dope

[img]images/graemlins/smile.gif[/img] That post by Knife Boy about the header gasket sealer reminded me to mentioned that you can make some excellent thread dope for assembly work and for sealing pipe threads by keeping your eye out for old cans of enamel paint that are just sitting around. Pour off the "vehicle" and just keep that heavy stuff in the bottom of the can. Mix it about 50-50 with general purpose grease; like you would use to grease the tie rod ends; and then stir and add a bit of 10W oil as needed to get it to move easier. You can add more oil over time as it dries out a little. I have used this concoction for years in the water well business and it is absolutely superb at resisting rust and thread siezure. [img]images/graemlins/smile.gif[/img]The best part is that there is an unlimited supply of old enamel paint sitting around in shops and garages so the cost to produce even a large quantity of this stuff is minimal. [img]images/graemlins/crazy.gif[/img]
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post #2 of (permalink) Old 08-24-2004, 07:56 AM
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Re: Make your own thread dope

Interesting. My Dad used plain old undoctored enamel paint as pipe dope, but when he put stuff together he wasn't interested it how it would come apart; he just didn't want it to leak. How it came apart was for someone else to worry about. And I don't remember a painted joint ever leaking. He would just dip the end of the pipe in the paint can and screw it in.
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post #3 of (permalink) Old 08-24-2004, 08:38 AM Thread Starter
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Re: Make your own thread dope

[img]images/graemlins/tongue.gif[/img] In da old daze, they used a lot of "Red Lead" for pipe assembly, but as time went on, the lead was outlawed so other types of sealants were used in it's place. THE PROBLEM WAS that the lead had lubricating qualities that other pipe joint compounds did not have, and it was easier to gald the threads when spinning pipe joints in at high speed. We used a 40-foot endless rope to twist the big pipe joints, and because of that there was a certain amount of side-thrust on the threaded joint. Without a lead-based joint compound there was a good chance of galding a thread if you tried to go fast and really make time getting that 800 feet of pipe into the well so you could lay the rig over and go home before midnight! [img]images/graemlins/crazy.gif[/img]
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