Files (7)
Published material guidance; still check heat, UV, load, and printer compatibility.
A planning starting point only; wall count, orientation, and geometry often matter more than infill.
Choose the needed variant, then slice it for grams, cost, and print time.
Saved setup guidance is used for material, infill, support, and per-file recommendation text; editable numbers are planning estimates only.
Reference shelf
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 |
Affiliate disclosure: if you buy through an eligible link, 3DPrintedCarPart may earn a commission at no extra cost to you. As an Amazon Associate I earn from qualifying purchases. Confirm product specifications, compatibility, seller terms, and vehicle safety before ordering or using anything. Amazon may redirect you to a nearby supported store; otherwise the original Amazon.com page remains available.
Unsure which one fits? Read the automotive filament guide.
Miata Shifter: Jinba Ittai
Print this part
Use the part context as a starting point, then confirm geometry-dependent values in your slicer.
Files
7 hosted model files
STL
Material start
PETG or ASA for durability in a car environment
Saved part guidance
Strength start
20-50% infill for a balance between weight and strength
Saved part guidance
Orientation / supports
verify in slicer
Exact totals
Slice for grams + time
Model geometry and final settings determine both
Vehicle exposure
Cabin/interior use; avoid high-heat zones
Open the STL, 3MF, or OBJ model in your slicer before printing. Exact grams, time, and final support placement come from the actual slice. Test-fit and heat-check the part before installing it in a vehicle.
License & use
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.
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3DPrintedCarPartDescription
When Mazda designed the Miata, they followed the principle of Jinba Ittai (人馬一体). This is the idea that the vehicle is a natural extension of the body. It is a reference to horseback archery, where the archer would treat the horse as an extension of the body in order to shoot with accuracy. The kanji characters that denote this design philosophy are printed atop the shift knob's curved surface. The shift knob is comprised of four parts (some STL files combine these parts). The top is separate of every other part so that the kanji characters can be printed to your desired level of precision. The bottom piece can be printed as a whole, with the thread piece excluded, or with the thread piece and the middle insert excluded (the thread is a M10x1.25 size, a fit for NA Miatas). You can give the shift knob a custom weight by excluding the middle insert and replacing it with different material. I have found that the shift knob has a weight of about 120 grams when all parts are printed with PLA plastic and with 100% infill. This is lighter than the stock NA shift knob, but I find that the weight difference is negligible. I also find that the larger and more bulbous shape is a lot nicer to handle. Happy shifting!
Compatible Cars
Originally published on thingiverse.com by Jacob Feenstra (Cowtippr) · License: CC BY
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