If it fluffs its usually old stock thats moisture damaged even if you cant see it.
The 1mm gap is do the guide never touches the braid so it never rips.
Recess is generally 0.8mm deep and double sided tape is the only way to go.
I like the non constant radii curves. I find constant radius curves predictable and not the challenge I like. Looks more realistic too. Not easy on your first attempt.
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