As stated about not being produced I did notice that Altrider did not have them in stock and from what I've read that has been that way for quite some time. The HB option is a no go also with my current GIVI set up. I also saw at one time Touratech made one, but long gone also. I'll try find one for a different bike and not use the mounting brackets and make my own brackets to fit the S10. Now to find the most cost affective option.......Altrider makes one. https://www.advdesigns.com/alpilurafory.html Hepco and Becker make one. https://www.advmotorrad.com/Hepco-Becker-Pillion-Alu-Rack-XT1200Z-Super-Tenere
I have a couple of those $8.99 sets of hand files from Harbor Freight that I use for the initial smoothing on the edges, and a few individual files I bought at the hardware store over time that give a little bit of a finer finish. After that it's just wet/dry sandpaper wrapped around a sanding block.What did you use to smooth the edges after a saw cut? I've used flap discs on steel but aluminum seems to clog the grit on the disc.