I turned a little dish today that had a scroll saw design in the middle. I used the black earth pigments and epoxy from Woodcraft to fill the design in. The wood I was using was oak. Anyway after making the dish I started to sand it smooth and the epoxy started to get small sanding dust specs in it. Took them out with the Skew once but they came right back. Anyone know a solution to this???
Tim
I think you'll fund that epoxy softens with heat and there is no way around it except not to generate heat.
Bill
tdup2 wrote:
Hi Tim
I don,t really know what you have there, but it might be bubbles from heat like Bill suggest or what I suspect is air bubbles trapped in the epoxy when mixed, try to use epoxy that has a long curing time and try not to get air in while mixing, the best guess I can come up with. Maybe someone else has some experience with using epoxy like that, I only have used CA and that likes to trap air also.
Agree with the above. I have used epoxy as a filler in things, but generally finish it with wet sanding ultra fine, which keeps it cool and makes a nice glossy finish.
i use epoxy fairly regular - if you are getting 'holes' forming and fiiling with dust when sanding - i have found the holes are not formed by the heat of sanding - the holes are formed from the heat of reaction when the epoxy starts to set. to limit the bubbles try not to use to deep a fill of epoxy. the thinner it is (3-4mm) the better and less likely to get bubbles. also when mixing try not to mix vigoursly - fold the two parts together.....
good luck
You can de-air epoxy using a vacuum tank. Also, you can get rid of surface bubbles by rapidly passing a hot-air gun set on high over the surface. Dan
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