Precision Gears

by Maker Tales in Scripts and Addons

TLDR read the bold text.

Precision Gears is a blender addon developed to bring an array of mathematically accurate involute gears to the precision world of Blender. Not only that, it's all incapsulated inside the closest thing to a faux "parametric" system, giving you the ability to change your gears on the fly.

Minimum version: Blender 2.92


This is a "beta" release some pretty big & exciting changes will be coming to the addon in the next coming months. Plus a whole bunch of videos and a wiki eventually. In the time being if you find any consistent bugs that you are able to replicate or have any future development ideas I would love to hear from you. The best place is in the maker tales discord in the Precision Gears channel link: HERE. Alternatively, you can fill in this form: Here not reviewed as often.

I'm currently developing the gear "presets" if you have any ideas of how I should standardize these I would love to know your thoughts.

If you would like to test out a reduced feature "lite" version to evaluate how the addon works it's linked: here.

Getting this addon for $24 on blender markets rather than gumroad at a cheaper rate is greatly appreciated as this will facilitate further development of this addon along with other precision addons for blender along with supporting blender at the same time.

Gears & Features currently available:


  • Spur Gear

  • Helical Gear

  • Herringbone Gear

  • Rack Gear

  • Internal Gear

  • Internal Herringbone Gear

  • Internal Helical Gear

  • Bevel Gear

  • Spiral Bevel Gear

  • Worm Gear


  • Center Extrusions

  • Set Screws

  • Cross Bore

  • Round Subtract Bore (Set Screw)

  • Round Additice Bore (Key)

  • Polygon Bore ( Triangel / Hex ect.)

  • Bore Previews

  • Preset Creation

  • Global Scaling

All future developments are included!
This is a one time purchase...
Of course, further donations are always welcome if you feel there granted =)

New With The Toothy Update:

  • Gears to keep material assignments when changing parameters

  • Internal gears outside perimeters perfectly round

  • Cross bore. XY parameters should be the total length of bore extrusion

  • Gear face chamfering/bevelling from tip (Spur, Internal, Helical, Herringbone, Rack)

  • Tooth crowning (Spur, Internal)

  • Tooth flank tip relief (Spur, Internal, Helical, Herringbone, Rack)

  • Tooth undercut (Spur, Helical, Herringbone)

  • Rounded tooth tips/reliefs (Spur, Internal, Helical, Herringbone, Rack)

  • Tooth flank base relief (Rack)

  • Better Topology

  • Pre-creased Edges (aka. Subvision Support)

  • Plus more fixes under the hood...

Soon to come:

  • Auto Rigging System...!

Sales 50+
Dev Fund Contributor
Published 7 months ago
Blender Version 2.92, 2.93, 3.0, 3.1, 3.2, 3.3
License GPL
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