Shifter knob replica Mtech for e30-e21 BMW - image

Files (1)

Bmw_Mtech_shif_knob.stl

STL

2.4 MB

Print guidance estimate

Uses saved filament metadata

Print cost & setup estimate

Setup guidance plus saved or slicer-confirmed filament, cost, and time. Model file size is never treated as printable volume.

1 model file

Recommended kit

50g

Based on 25% main infill across listed model files

Material cost

$1.20

Filament only at roughly $24/kg PETG / ASA

Print time

2.0h saved / 1.4h–2.4h estimate

Uses 70 mm/s, 0.2 mm layers; verify supports in slicer

STL file	Role	Source size	PETG / ASA 20%	PETG / ASA 25%	100% solid	Recommendation
Bmw_Mtech_shif_knob.stl	Primary model	2.4 MB STL	46g $1.10	50g $1.20	110g $2.63	Print with a high layer resolution for a smoother finish

Saved setup guidance is used for material, infill, support, and per-file recommendation text; editable numbers are planning estimates only.

Interior

Shifter knob replica Mtech for e30-e21 BMW

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Michael Chen

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Description

Bmw e30 Mtech shifter knob replica. After printed, it will have filament lines, as you can see in the car interior picture. In order to achieve the smooth finish you have to: 1_Sand it down with 220 grit (dry) in order to erase the lines of the PLA. Here you must sand up/downwards, to erase them easier. 2_Sand it with 400 grit (wet) til you erase the scratches of the 220 3_Sand it with 600 grit (wet) to smooth the surface out.

Print Settings

Time: 2h

Filament: 50g

Supports: Not needed

Compatible Cars

BMW E30

Published Feb 14, 2026Updated Jul 15, 2026

Originally published on thingiverse.com · License: CC BY

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