Grinding & Milling Attachment for a lathe - Build - Part 1

A treadmill DC motor was mounted on my engineer's lathe to provide grinding and milling capabilities.  The motor does 8,400 RPM and it was not necessary to provide a belt drive. Instead I turned an ER32 collet holder which mounts directly on the motor shaft. The collets allow me to use a range of end milling tools, and small grinders, and a range of Dremel tools. It works best on a vertical slide (milling) attachment.

Part 1
Part 2 is here: Making an ER32 collet holder to build...

01:09 Little Giant grinder from Boxford - for comparison.
01:22 DC Treadmill motor to be mounted eg on the cross slide
01:26 The finished product mounted on the cross-slide.
01:36 The finished product mounted on a vertical slide.
01:56 The finished collet holder to mount on the motor shaft.
02:40 My collection of collets
02:44 A Dremel collet installed.
02:56 Sample of Dremel tools.
03:04 Showing how the sompound slide is connected by spigot
03:27 Spigot
03:39 Drawing of a spigot with dimensions
03:57 Turning a stainless steel mounting disc.
04:16 Parting off 80mm diameter stainless steel
05:20 Making the 10mm thick steel mounting plate
09:00 Assembling the mounting plate, disc and spigot
09:40 Testing the motor after mounting
10:36 End of Part 1
10:54 end of video

List of videos on related topics in my Playlist:
How to install a variable speed DC motor in a lathe (This video):
Motor Replacement Boxford A Mk 1 with...
How PWM and VFD speed controllers work.
Motor Speed Control Electronics for A...
Building a milling and grinding attachment using a DC motor - Part 1
Grinding & Milling Attachment for a l...
Making an ER32 Collet holder mounted directly on the shaft of a DC motor
Making an ER32 collet holder to build...
The convenience of a variable speed, reversible lathe motor when cutting a thread:
How to turn a metric thread using an ...
How to wire a reversing switch (originally for the AC lathe motor)
https://studio.youtube.com/video/aTnw...