I got the jig from Amazon- though I did call the manufacturer- Wheatland Construction Corp. in Okla. to ask questions. They have been making it for 25 years- American! No reported problems with the jig as it is.
For what it does, it is the best tool since sliced bread! It can adjust angle easily. It goes on/off the sander in seconds w/o tools. You can change out a belt while it is on. Blades never get heated, it is just too fine and quick to even allow that. You can easily observe the edge for metal removal and burring as you sand it. NOTE: You do not use it with the leather strop however- as that does have to be used with the blade pointed down.
I sharpened 10 dull kitchen knives in 15 minutes! For basic knives the best grits seem to be 120, 320, 400, 600- though 120, 320/or 400, with the strop would work for most of my everyday/kitchen knives.
You can change and keep consistent angles. I used 10 degrees on the thin kitchen and filet knives- scary paper shaving sharp in under a minute! You can go as high as 35 degrees if you like.
I am going to make a wood jig/block/spacer for my broad-heads to accommodate the ferrule. Should be easy enough. I plan to set all my bevels with it. For my best knives I will still use my KME for the final edge, but in most around home apps I bet a guy could just use the sander/jig/belt set-up.
The time savings alone- while having sharp knives/edges around my home was well worth the $100 investment (HF sander + jig + leather belt + sanding belts = $100).
Hope that helps
Dan in KS