thumb-trackball/hardware/mechanicals-btu-mod

Description

This is @keyboard-magpie 's modification of the top shell of the ploopy thumb trackball to convert it to use ball-transfer-units.

This design is intended to be compatable with the standard baseplate file.

The modification also includes a 5 degree tilt base file with small cutouts for different BTUs. STEP files for further editing are included also.

Modification origin

Originally discussed at https://www.reddit.com/r/ploopy/comments/r3cgjc/first_draft_of_a_btu_mod_for_the_ploopy_thumb/

Part sourcing

POM BTUs from here: https://amzn.eu/d/6OjTR17

Included BTU sleve print file allows the use of these steel BTUs: https://www.aliexpress.com/item/1005003066404497.html

Links checked and working as of 15/Aug/2024.