My cousin’s husband repairs and restores guitars and asked if I could make a stencil. There were a few issues at first as the pdf he sent didn’t seem to align when printed, but it seemed that was due to scaling issues (I use Affinity Designer). But I printed with no scaling and aligned the 2 and they fitted perfectly, so then lasered the design on ply.
I gave it to him and he said “it’s perfect and exactly what I need”. Now we might try and make a few in different materials and he’ll sell on to the guitar enthusiast market.