Regular Member Post
Most members have ended up with one or more open center finger wheels that have a part broken out of the center ring.
While it is always easier to toss it and find or buy a new one, the fun part of this hobby is to apply a little time, ingenuity, planning, resin and basic hand tools, they can be restored to near new condition. After all, it is a hobby and it's supposed to be fun and there is nothing more basic to this hobby and at the same time a lot of fun than to create a method from scratch out of research and thought that in the end turns out well, it worked. Others may want to post how they do the same thing with even better results.
The first image shows the damage circled in red and the latex rubber I used to create a mold of an undamaged area and the latex mold removed from the finger wheel.
The next shows the mold placed over the damaged area, the front, the back and the front held in place with tape.
The third image shows the back side with two pieces of wire being used to hold the mold away from the wheel so clear epoxy type resin could be poured into the damaged area. The center image shows the resin in place and the right image the wire removed and the mold held in place against the wheel with tape.
The last image shows the latex mold removed and preserved for another fix. With a bit of filing, and sanding the finger wheel was in the correct shape.
After shaping (removing excess resin) and a final sanding with 1000 grit dry sandpaper, a mixture of 5% MEK, 5% Acetone and 90% Denatured Alcohol was used with a high bite synthetic cloth to remove most of the sand marks and age related usage marks on other areas. The wheel was then fine sanded by using the same chemical mixture with a soft cotton cloth. Immediately after the final chemical sanding, Novus 2 was applied and buffed off with a Ryobi orbital buffer. Only one application on Novus was necessary after the chemical sanding.
The right side of the last image shows the once damaged finger wheel in what I would consider to be 97% new. It will certainly look just fine on a phone in the same condition.
The latex material took a few days to cure. Once the mold was cured and removed, this complete restoration was completed in less than a half day with most of that time spent waiting for the resin to cure. Shaping, sanding and polishing were completed in less than an hour.
Yes, it is easier to just toss the busted one in the junk and dig one out of a parts box, for those who have the luxury of having parts boxes, or just buy another from some source. This is being posted as an example of how one can use latex rubber and clear or colored resin to repair damaged items. It is being posted to help anyone interested in basic restoration techniques, such as this, get a few steps ahead on the learning curve. Quite easy to do and other than the Ryobi buffer, no other power tools were used in this restoration.
