Glue to water ratio

[TuomoReiniaho]

Nice to have some life here!

@bownarra

One tool to make hornbows easier/quicker is a router sled and a 2mm triangles cutter. Cutting the grooves by hand is ok but the router takes 10 minutes and will be flawless. The sort of accuracy that is impossible by hand.
Another would be a good sized edge sander.

Would you have some examples of these, how to groove the (concave) horn with a router and triangle cutter, or usein edge sander?

I groove one horn by hand in about 25 minutes. I use a wooden jig to where I glue the horn with hot melt glue. Then I use a ring rasp for making the concave surface and after then the grooved scraper.