Thickness Swatches

Credits where credit is due. I got this idea from another [thing](https://www.thingiverse.com/thing:3938054). But since I'm learning fusion 360, I want to design a new thing based on that idea. I'm going with a different design, with the thickness recommendation from [reddit](https://www.reddit.com/r/3Dprinting/comments/dn7jvu/thickness_swatch_1_to_5mm_for_a_realworld_feel/f59ci8v/?context=3).

You just need to print `holder.stl` and `swatches.stl`. Use M3x20 with a nut to screw them together. Put them together in order of `14312` to get all thickness from 1-11mm.

I also added a blank swatch (without mm deboss), so you can make easily adjust the thickness. Just change the z directly from slicer.