Circular Scale
Description
PDFThis is a simple round threaded indicator, numbered 0 to 9. I used it when I was testing how repeatable a TTP223 capacitive switch was. It divides the thread pitch of 1/32 inches into 10 so that the linear movement was 1/320 inches (almost 0.08mm) for every graduation.
The thread is 8-32 because that was the long screw I had on hand, with PLA it was very tight, it might be better to scale it up a few %. I just sized the thread with a tap after it was printed.
Depending on which way you put it into the screw it will count up or down as you turn the screw.
My filament was white and the markings are hard to see, I painted over it with a permanent marker and then rubbed it off with isopropyl alcohol to improve the visibility.
I printed with the writing upright so the spreading out on the bed didn't affect the marking too much.
Print Settings
Printer Brand:
Creality
Printer:
Ender 3
Rafts:
Doesn't Matter
Supports:
No
Resolution:
0.2
Infill:
50%
Filament: Unknown PLA White
Notes:
3G of PLA filament, 23 minutes according to Cura
Improve readability
Painted with black marker and cleaned it off with IPA, this showed up the markings better
Test setup, using Lego of course. Very flexible accurate and repeatable
How I Designed This ===================Design steps
Fusion360, use sheet metal design and make a ring. Flatten it out and add markings. Reform into a ring and add centre cylinder with the threaded hole.
Fusion now allows you to emboss circular shapes without the fancy gymnastics used hereUnfolded ring with markings
Refolded
Fill the centre and thread ahole
What I should have used, on the right
Tags
Model origin
The author marked this model as their own original creation. Imported from Thingiverse.