My First EVER Try at Machining a Brass Pinion Gear - or ANY gear!

I've never cut a gear before, so it's time I tried! How many times can I mess up? Join me in my scary first attempt at machining a tiny pinion in my home shop.

A friend asked if I could make a replacement for a split plastic gear from an antenna rotator. Watch me try to understand the jargon and work stuff out. I'm sure any competent home-shop machinist can do this, but I'm famously incompetent in a huge range of human endeavour. Luckily I have no fear of failure, a large scrap bin and l love new challenges.

AIMEE my artificially-intelligent machining and engineering expert offers helpful and kindly advice. She's edited this description again, hasn't she!

Tooling:
TK2.G.050.005.025NSR 0.5mm Simturn K2 Grooving & Profiling Insert (Simtek)
TK2.G.1212.A.14.04R 12mm Shank Simturn K2 External Tool Holder (Simtek)
MGMN150-GH01 https://www.cutwel.co.uk/1-5mm-h01-ge...

Gear Calculator: https://evolventdesign.com/pages/gear...

Gear Images: Non-Involute Gearing, Function and Manufacturing Compared to Established Gear Designs. Stadtfeld and Saewe Gear Technology Jan/Feb 2015
https://commons.wikimedia.org/wiki/Fi...
Trochoid Const at Russian Wikipedia, CC BY-SA 3.0 https://creativecommons.org/licenses/..., via Wikimedia Commons

Music: Corncob is licenced to Youtube

Kerching sound: Benboncan

00:00 Gearing up