DIY composite pulley for the home made lathe [part 11] @AccidentalScience
DIY composite pulley for the home made lathe [part 11]  @AccidentalScience
Uploaded February 2022 | Updated September 2026, 1 week ago
A DIY composite two-stages pulley, makeshift indexer, and lathe drill holder jig are showcased here in a challenging situation.
Making the pulley that drives the spindle's lathe using the same lathe to make the very same pulley is a challenge. Because of the design of the spindle of my lathe I was not able to find a ready to use pulley off the shelf, and ordering one at the machine shop gave me a staggering long time to deliver. So I got creative and I made the pulley from scratch. With a piece of thick steel tubing and an old aluminum flange and some epoxy resin I made a pulley that is suitable to be driven through a poly-V belt, as required by the motors, salvaged from washing machines.

0:00 The problem
1:41 First step solution
2:19 Making a sleeve and FIRST CHIPS ever with this lathe!
3:08 Let's check the very first part turned with this lathe
4:18 Checking how the ways wipers worked
4:52 A makeshift indexer
5:58 Lathe drill holder jig from a scapped drill press
8:14 Making indexed angle holes on the side of the sleeve
8:49 Preparing the seats for the sleeve on the shaft
9:40 Step two: Installing the sleeve to gain more torque
9:59 Turning an aluminium ring from an old flange
11:00 Attaching the aluminium ring on to the sleeve
11:33 Making the composite secondary ring
14:18 Turning the pulley's secondary ring
14:31 The final pulley
15:05 Installation of the pulley and belt tensioners
16:20 Speed test
17:29 What's up next


In the video you'll see a linear scriber that I've made myself, video: youtu.be/f9tA4i2xqjM
The motors are driven with an electronic speed control (ESC) that I designed myself, video here: youtu.be/5zRCCL2JZTI
A contactless RPM meter (tachometer) is featured, I've shown how it is made here: youtu.be/RlAIcnxVLZE; here: youtu.be/iQ5vwq0JoKE; and here: youtu.be/fzcXJIGZSHA

Watch the full series of the minilathe: youtube.com/watch?v=KSE7DORiYfs&list=PLwbCeSU2Kq_wrUUInSUWJksA-LHhhMhFx
Watch the series of electronics: youtube.com/watch?v=ye9dguKy_Cs&list=PLwbCeSU2Kq_zORt4un2iQ3JUYxzWF3cTJ

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Website: accidentalscience.com

Music (in order as played in the video):
Empire Seasons by Dan Henig
Hedge Your Bets by TrackTribe
Komputo by Francis Preve
Depth Fuse by French Fuse
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DIY composite pulley for the home made lathe [part 11]

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