In this video, I'm machining a simple gear holder and test if it's possible (and reasonable) to make gears using ordinary metric tap. Second attempt using real gear hob: Video that inspired me to try: 00:00 - 03:13 - Machining bearing housing 03:14 - 04:48 - Machining shaft 04:49 - 06:39 - Assembling gear holder 06:40 - 08:52 - Making gears 08:53 - 10:12 - Presenting results