Aluminium insert glued into head tube and wenge cap glued top and bottom to give it a defined edge.
Inlay roundel in the non drive side stay. It was supposed to look like the BMW logo (Bubinga, Wenge, Maple) but general concensus is that it looks more crash test dummies like. Which is probably more appropriate.
The finished frame gets 2 thin coats of epoxy resin and 3 coats of polyurethane varnish to finish it. This photo is after the first resin coat. It needs plenty of rubbing down between coats to achieve a perfect finish and allow each layer to bond to the previous.
Tape up the bits that you don’t want covered in varnish
I experimented with several different techniques for the logo including printing on to edible rice paper and tissue paper but neither of them gave a completely clear background. In the end I used Lasertran waterslide decal paper like this printed on an inkjet printer. I laid the printed sheet onto a thin layer of varnish and then varnished over the top to make the white background go clear. I’m quite happy with how it came out although you have to be super careful when sanding down between coats of varnish as the print is right on the surface.