Recommended filament for this print

Product references matched to the published material guidance. Confirm diameter, heat resistance, colour, and printer compatibility.

Referenced item	What to verify	Price & availability
PETG filamentAmazon · Affiliate link	Amazon product page for 1.75 mm PETG; confirm colour, spool size, print temperature, seller, and delivery region.	Check price at Amazon
ASA filamentAmazon · Affiliate link	Amazon product page for 1.75 mm ASA; use an enclosure and suitable ventilation, and confirm seller and regional availability.	Check price at Amazon

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Knobs/Buttons

D20 Shifter Knob

0 downloads143 views0 quality score

License & use

CC BY

Commercial use allowed

Attribution required

The file license permits commercial reuse, subject to any applicable attribution or share-alike terms. License status does not verify vehicle fitment, OEM rights, design patents, or safety.

Shared by

Kevin McCormack (HarlemSquirrel)

Description

I used the awesome d20 model by whosawhatsis to build this shift knob that is now installed on my 2014 Jeep Wrangler. I've included the original d20 model and my OpenSCAD source code so you may adapt this to your vehicle. I've also included some photos that show how I measured my shaft. I recommend flipping the model 180 degrees for printing which works mostly well without supports. Update Nov 1st 2017 I've added a rounded corners version along with a variable to change how much the corners are cut down.

Compatible Vehicles

Jeep Wrangler

Updated Oct 24, 2026

Originally published on thingiverse.com by Kevin McCormack (HarlemSquirrel) · License: CC BY

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