Posting this as a followup to the scraper-plane thread, and to answer Stewie's question about how I obtained plane-like shavings from my 112.
I prepared a piece of 0.042" blue-hard (Rc50) 1095 as though it were a scraping plane blade, as for an 80, 112, or 212. Bevel angle was 45 deg. I burnished at 15 deg below horizontal (30 deg above the bevel) with a carbide rod. I used a bit more pressure than usual (though still fairly light) to try to improve the visibility of the resulting burr.
I then cut a "sawtooth" into the edge with a needle file, wasted the metal between the vertical face of the tooth and the scraper edge with a file, and imaged the burr profile at 5:1 magnification (Canon MP-E 65 lens on 1Dx II body). Each pixel in the image is ~1.3 microns.
scraper_burr_1.jpg
As I've said several times in the other thread, the profile is remarkably similar to and has similar cutting mechanics to a plane blade with a tightly set cap iron. The effective cap-iron setback (horizontal distance from the tip to the scraper's face) is 60 pix, or about 0.003".