I haven’t seen any recent posts for a spiral bowl, so here is another one. Sorry, no bananas.
It’s going into this box, so I don’t have to wrap. Because cutting out and engraving your own box is soooo much faster.
I made the core piece of plywood for the bowl from a sheet of draftboard and two sheets of burled-laurel veneer.
I believe I used the file from this post and upsized it to a 9-inch diameter, but I don’t remember.
At any rate, details on the diy proofgrade and template maker for the box are in Beyond the Manual.