document updated a month ago, on Feb 6, 2023
||one thousandth (10-3) of a meter
||roughly the thickness of a credit card, a pencil tip, or a blade of grass
||10 thousandths (10-4) of a meter
||roughly the thickness of a human hair (17-181 μm), or a piece of paper (70 to 180 μm)
||100 thousandths (10-5) of a meter
||roughly the thickness of a cotton fiber, or a human red blood cell
||one millionth (10-6) of a meter
||roughly the thickness of E. coli bacteria, or spider silk
For the machinists out there, note that 1 thou is 25 micrometers.
tools for finishing fine-detailed 3D prints, especially D&D miniatures
This video contains a LOT of wisdom about how to do finishing on miniatures. The miniatures that we're having printed for us are usually made using a resin (SLA / stereolithography) 3D printer.
- adhesive-backed sandpaper
- Sandpaper can be cut with a utility knife or scissors, and can be cut into small strips or other arbitrary shapes. Just don't use your nicest scissors, because this will slightly dull them.
- You can adhere the sandpaper to any tool you have handy, Some suggestions that work well:
- There are "assortment / variety pack" options available for adhesive-backed sandpaper, such as:   
- pin vises
- they're a "manually rotated drill for making tiny holes"
- besides drilling, they can also be used for grinding and polishing, provided the right bit is used
- somewhat related is the Fiskars hand drill, which is still hand-powered, but can produce higher speeds than a pin vise can (which itself is closely related to the brace)
- needle files
- escapement files
- slightly smaller than needle files, but downside: they're much more expensive
- I believe the name alludes to the escapement within clockwork?
- endodontic files