That's beautiful, thanks for sharing. I was wondering what may be the best way to do frames. Custom frames, here in Singapore, are a bit expensive relative to the rest of the parts.
3D printing is one good way, the other way I used is just to get a frame from IKEA and 3D print the inside white bit to my exact dimensions, which worked beautifully.
I should post that build too, with some photos, I really like it.