Iām probably more of a beginner in Affinity Designer than you are, but i did manage to get the Snapmarks to work in it by resizing them once I had the marks in the file. The discussion below explains what is happeningā¦each of the design programs uses a different import DPI, and that messes up the sizing. But if you change the size of the individual marks inside the program itself, then save the SVG, it will keep them at that correct size.
Read through these notes and see if it works for you:
Iām probably more of a beginner in Affinity Designer than you are, but i did manage to get the Snapmarks to work in it by resizing them once I had the marks in the file. The discussion below explains what is happeningā¦each of the design programs uses a different import DPI, and that messes up the sizing. But if you change the size of the individual marks inside the program itself, then save the SVG, it will keep them at that correct size.