This morning I amended my laser cutting bowl file from my failed attempt yesterday. I moved out the slats and ran a few tests to make sure the sections slotted in tightly.
I decided not to use any glue when slotting in the sections as yesterday it had reacted with the plastic and left a messy white stain.
It took a little tweaking to get all the parts to go in to the top and bottom sections, but the final piece holds together well.
I laser cut some rings the same size as the top of the bowl and glued them together using super glue to make a press mold.
I then pierced out the edge of the copper bowl and filed it.
I used 280 grit wet and dry paper to put a mat finish on the copper using a circular motion.
Instead of polishing to a high finish which would oxidise quickly anyway I decided to use platinol to blacken the copper.