Jump to content
I Forge Iron

How To Loosen Riveted Pivot?

Recommended Posts

Hey, all, I'm just a fount of questions this week.

I just bought a caliper on ebay like the one shown below, and the rivet is tight...way TOO tight to use the caliper the way you're supposed to use these kinds of calipers.

Does anyone know how to loosen the rivet so that it's not so hard to pivot the joint? I was thinking that heating the rivet, while keeping the steel that surrounds the rivet cool, would force the steel rivet to be smaller after it expanded and then contracted, but that doesn't seem to have worked (I tried it just now with an O/A torch, but maybe I didn't get it hot enough)...

I tried penetrating oil, working it loose by forcing it back and forth a few hundred times, and nothing seems to work. Please help!



Link to post
Share on other sites

Greetings Crunch,

Use a cup and soak the riveted end in the soloution overnight.. Use a small propane torch and apply some heat ., Place the joint on a soft block ( brass) than tap the joint while attempting to open and close.. This will compress the debri at the joint and allow space for movement..  Take your time more than one application might be necessary.. Good luck..

Forge on and make beautiful things


Link to post
Share on other sites

I would try some PB Blaster or some kind of penetrating oil overnight.

Before you get it too hot & damage the calipers make sure it's not a threaded button cap screw? 

The correct term for these calipers is hermaphrodite.    (Her maa  fro dite)

Link to post
Share on other sites

I would not heat them.  Soak in kroil or other penetrating oil and work them.  They should have some amount of tension so that they maintain the desired setting.  To loose is useless.  Adjust them by opening them farther than required and tap one leg against the edge of your bench or whatever to close them to the setting you need.

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...