A scraper is extremely useful no matter if you have a resin printer, a FDM printer or even for kitchenwork. A plastic scraper means you don't dent the surface when cleaning stuff that stuck to your non sticking frying pan.

Many designs of this around, but I wanted a slightly more sturdy version with a more pronounced edge (it's pronounced /ɛdʒ/... I honestly don't have a clue of how the phonetic language works but since I already know how to pronounce edge I don't really need to read the phonetic stuff anyway!)

I suggest you print this using supports. It wont add supports since you're going to print it flat, and even the worst printer ever produced should be able to print it without any trouble. But, using suppots allows you to click additional checkboxes in your slicer, and the most checkboxes clicked when the grim reaper arrives wins, right?

While it works well at any resolution the edge gets a bith smoother and better the higher resolution you use. I therefore suggest 0.10, but it will work just as fine with 0.2 (even if it wont be as aesthetically pleasing).

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I've added a scraper with a longer scrapy bit.

First design was 15 mm with highest point of 4 mm Longer scraper is 30 mm with highest point of 4 mm

It's possible to calculate angles... but... I'll leave that for you!