International Association of Penturners - View Single Post - Watch part blank making
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Old 02-11-2019, 08:26 AM   #8 (permalink)
Join Date: Jun 2011
Location: Plain City, OH
Posts: 1,555
Photos: 150


Attached is one of two watch parts blanks I have made that I was able to sell to a couple of customers.

I started by attaching the carbon fiber with CA. Here is the process I used:

1. Paint the tube black.
2. Fill the ends of the tube with play dough.
3. Cut the Carbon fiber to length and insert the tube.
4. Stretch the carbon fiber tight over a frame or by tying the ends.
5. Drench the whole thing in CA and allow to dry overnight.
6. Cut the end of the carbon fiber close to the tube and remove play dough.
7. Layout all of the parts that are going to be used to get a nice pattern.
8. Ben all of the parts to the size tube you are using with a dapping block and a press or hammer.
9. Using Thick CA attach all parts as organized earlier. Use as little CA as possible.
10. Allow to dry for at least 24 hours.
11. Cast with PR in whatever way you choose to cast. I recommend no more than 3-3.5 drops of MEKP per ounce of PR. (Also I think a pressure pot makes this cast so much less frustrating.

I think that is pretty much it. I have heard others using PR to adhere the carbon fiber to the tube but I have not tried it. I have had some failures with this because I did not get the CA to fully cure or off gas.

Hope this helps someone. I am certainly no expert.

Pens by Ron
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