I've been into knife sharpening for a while now using the Lansky and Spiderco sharpening systems. Both system are very good but reprofiling a very blunt blade takes allot of time. I designed this system to use normal good quality sandpaper since very coarse wet stones are expensive and wear out very quickly. The frame is kept simple using only a couple of printed parts and ready cut bolts to keep the parts together. Email me at Fmulder25@gmail.com to get the hardware parts list