Goal: $300, Received: $275.00 (92%) Contribute Now
Donate whatever you can or Join the 14,000 other NAWCC members for only $80 (plus $10 for hard copy publications). Check it out here.



Page 2 of 2 FirstFirst 12
Results 16 to 21 of 21
  1. #16
    Registered user. roughbarked's Avatar
    Join Date
    Dec 2016
    Location
    Western NSW, Australia
    Posts
    1,637

    Default Re: Repairing worn pinions. Testing using epoxy? (By: R. Croswell)

    Quote Originally Posted by R. Croswell View Post
    Loctite 5-minute is good for lots of stuff. That's what I used with fine hardwood sanding dust to repair a wooden pinion. Had to do it because I replaced a broken and missing tooth and needed the worn teeth to match the same profile. I also like JB-Weld clear epoxy. My question was Which Plastibond product roughbarked was proposing to use. Also didn't quite understand how he proposed to use dowels in a repair like this.

    RC
    Dowels are a long accepted method of joining pieces. in this instance much smaller than usual.
    Plastibond is made by Selleys in Australia and is actually a resin and a hardener, similar to epoxy in that it is two part. The resin is styrene and the hardener is benzol peroxide. Another name for it is bog. Used by panel panel beaters to repair dented panels. http://www.selleys.com.au/trade/buil...nd-heavy-duty/

  2. #17

    Default Re: Repairing worn pinions. Testing using epoxy?

    Quote Originally Posted by roughbarked View Post
    Dowels are a long accepted method of joining pieces. in this instance much smaller than usual.
    Plastibond is made by Selleys in Australia and is actually a resin and a hardener, similar to epoxy in that it is two part. The resin is styrene and the hardener is benzol peroxide. Another name for it is bog. Used by panel panel beaters to repair dented panels.
    Sounds a lot like 'Bondo' we have for patching automobile dents and all sorts of other stuff. Still not sure what you propose to join with dowels. As I understand it issue it involves filling depressions worn into the wooden pinions.

    RC

  3. #18
    Registered user. roughbarked's Avatar
    Join Date
    Dec 2016
    Location
    Western NSW, Australia
    Posts
    1,637

    Default Re: Repairing worn pinions. Testing using epoxy? (By: R. Croswell)

    I've glued or joined and built up a few different types of things with such materials and I've found that like roughening the surface, any extra method of holding the adhesive in place is advantageous. if the piece is too small for dowelling then a couple of small drill holes give the adhesive a better grip.

  4. #19

    Default Re: Repairing worn pinions. Testing using epoxy? (By: roughbarked)

    Quote Originally Posted by roughbarked View Post
    I've glued or joined and built up a few different types of things with such materials and I've found that like roughening the surface, any extra method of holding the adhesive in place is advantageous. if the piece is too small for dowelling then a couple of small drill holes give the adhesive a better grip.
    Perhaps you can show us an example of a wooden works pinion that you have rebuilt using this technique?

    one thing I would do is clean the part with acetone first to remove any wax, graphite, or other unknown residue that may be present before applying the resin or epoxy.

    RC

  5. #20
    Registered user. roughbarked's Avatar
    Join Date
    Dec 2016
    Location
    Western NSW, Australia
    Posts
    1,637

    Default Re: Repairing worn pinions. Testing using epoxy? (By: R. Croswell)

    Quote Originally Posted by R. Croswell View Post
    Perhaps you can show us an example of a wooden works pinion that you have rebuilt using this technique?

    one thing I would do is clean the part with acetone first to remove any wax, graphite, or other unknown residue that may be present before applying the resin or epoxy.

    RC
    I've never had to repair a wooden clock pinion. Repaired a few other wooden moving parts though.

  6. #21
    Registered User Jim Burghart's Avatar
    Join Date
    Jan 2004
    Location
    Upstate NY
    Posts
    126

    Default Re: Repairing worn pinions. Testing using epoxy? (By: roughbarked)

    Roughbarked,

    Interesting product. It does sound like bondo that we have here. I have used these products to repair rotten wood on houses, and any number of other jobs needing a filler / adhesive. Thanks for the information from down under


    RC,

    That is an excellent point, I omitted from my first post.

    The first thing I did was clean the movement, usually the first thing I do in a repair. Then sanded the grooves very lightly with 220 sand paper to rough the surface. I used a bit of lacquer thinner to further clean just the pinions to be filled.

    Jim

Similar Threads

  1. Confused about teeth repair using Clay and Epoxy
    By grasshopper in forum Wood Movement Clocks
    Replies: 4
    Last Post: 10-19-2014, 03:12 PM
  2. How does one repair worn plate holes?
    By berntd in forum Watch Repair
    Replies: 7
    Last Post: 01-06-2010, 06:00 PM
  3. J&J Watch Repair - Any one every used them?
    By wwhitby in forum Watch Repair
    Replies: 6
    Last Post: 05-05-2005, 09:16 AM
  4. Replies: 2
    Last Post: 07-03-2004, 04:19 AM
  5. Repairing SethThomas Pinion Leaves
    By Lincolnhill in forum Clocks General.
    Replies: 11
    Last Post: 09-16-2002, 12:50 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •