This is where it gets into building experience. To "improve" I went from a long roughing stroke to shorter "finishing" strokes, and more attention toward "checkerboarding" as Gotteswinter calls it in his video, or X's as you refer to it. But, as you noted, it was a bit early for that. I'm building experience by making mistakes.So what did you do to improve? Scraping 40 PPI and 40 to 50 % percentage of points (POP) is difficult and as I say in Taiwan "soenen sun chow" (Practice makes perfect") Yeah once you practice eye hand coordination it as anything it gets better. One thing I can say it your trying to get it to good to fast. That's an issue many rookies have. So next time scrape or semi rough a bit longer.
I measured between .0004 - 0007 when roughing. I have used a scale and am getting around 8 lbs. I haven't measured depth for these shorter strokes but am using similar pressure. I am thinking that thinning/slotting my scraper body to give it some flex would make it a bit easier, but haven't yet made the leap to doing that.To help teach the others reading this, did you measure the depth of the scrape marks?
I was not accusing you of adding blue sharpie high spots...LOL just telling the story.
ThanksDepth sounds good. Remember to always press down the same when scraping 40 PPI - don't lighten up the depth when you get more points. Did you experiment raising the back of the scraper handle to get a narrower cut and lower to get a wider cut? Curious so the others can learn too. I like what I see, your a fast learner. Plus you have a plane? You have to tell us about that sometime too.