Jump to content

How to remove/replace 'rusted-in' screws?


Recommended Posts

What is the best/safest way to remove end-plate screws which are 'rusted into place' without damaging the instrument?

 

I put the inverted commas in because I thought that on most(?) 'tinas, the screws went straight into the wood, and

thus cannot be 'rusted into place', whatever it is that is stopping them turning - just anno-domini, I expect...

 

Ta.

 

Roger

Link to comment
Share on other sites

Only cheap vintage concertina bolts screw into wood, all others screw into what is termed a captive nut, usually made of steel. So yes rusted in is a reasonable term. Heating them with a soldering might help, have to be for much more tha a few seconds though. No sudden movements.

Link to comment
Share on other sites

32 minutes ago, Chris Ghent said:

Only cheap vintage concertina bolts screw into wood, all others screw into what is termed a captive nut, usually made of steel.

Usually brass in my experience in English made concertinas.

 

Soldering iron is a good method, but as Chris says it needs to be long enough for the heat to travel the full length of the screw. 

After heating a few sharp taps on the screw head, use a drift rather than striking directly with a hammer.

Try to turn the screw back and forth several times before attempting to unscrew.

No guarantees!

 

Link to comment
Share on other sites

Soldering Iron is good, as is a touch of impact, do avoid releasing agents, like WD40 etc. Sometimes the corrosion is between the wood frame and the bolt, not the bolt and the nut. If in doubt, be prepared to drill it out I have a number of left hand spiral drills that drill in reverse, some times these can start the screw backing out.

 

Dave

Link to comment
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.

Guest
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...