When you grind off the top layer this is what the material looks like. It is very smooth with some small air or dry pockets but over all a very solid material.
Pulling this frame out of a huge tray of glass dust gave me a feeling of success that fueled me to continue to push the boundary's of what is/isn't possible.
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Fiber Glass 3D Printer
When I left the PhD program at the UW I accepted a job engineering the world largest 3D printer and the first 3D printer in the world to print in fiber glass. (Now there are much larger machines but back then the largest machine I had seen was one that was roughly 2ft x 2ft x 1ft this one was more than 3 times that size). When I started there were two major issues with the machine. First problem was layer adhesion horizontally and vertically. The second problem was resolution.
