re: A Cure for Arthritis?

Thanks for the kind words.
Abbas, I find Hock’s prices fine for the quality of what they sell. These planes are a quite different animal from card scrapers. The blade is at a 72 degree, forward leaning angle and the burr must be turned close to 15 degrees forward to get the angle of attack right.
The angle on a card scraper is less critical as you can adjust the angle with your hands.

Brian, I’m not familiar with the scraper holder you have (I did look at it) but judging from your description of the jig, I would say it was designed to turn the burr at the 72 degree angle that the Stanley #80 (and my plane) uses. As your blade holder is not locked at a fixed angle you can get a wrong angle of attack easily. 45 degrees will aim the bur straight into the wood and you will get a very aggressive cut that should want to dig right in. 90 degrees will slip right over the surface with no burr contact at all.
Bending the scraper and changing the angle to vary the cut are both techniques used to control the action of a card scraper which has an un-beveled edge with a burr on the square corner.
Try yours at an angle close to 72 degrees or make a plane like mine and your sharpening jig will make more sense to you.

Hope this helps.