Magnetic drive for my pantograph pattern torch

At long last I finally got around to making the drive unit for my pantograph pattern torch
https://www.homemadetools.net/forum/...72-2#post38317

in the past I have used it a few times but always just clamped a bent bolt to the top bar in alignment with the torch and had a temporary pattern support clamped on as well. I could make duplicate parts manually but it was really more trouble than it was worth.
I finally pulled one of those R-tu-its from the pile and started in making the drive unit for it
Starting with a 12Vdc linear actuator motor, a worn out die grinder, a cylindrical NEO magnet this is what I came up with
Attachment 43664
I shortened the acme screw and pressed hub on the end of it to mate up with the magnet
Attachment 43665
I did the same thing to the die grinder rotor then by magnetic connection only picked up a 20 inch heal bar with it while holding it horizontally, Seems plenty strong
Attachment 43666

Attachment 43667
I then drilled and bored out the die grinder housing so I could take advantage of the shaft bearing
Attachment 43668
then I bored out the actuator housing so the die grinder could fit inside
Attachment 43669
After shortening everything and assembling this is what it looks like
Attachment 43670
Next to make a mount for it

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Thanks Frank S! We've added your Pantograph Drive Unit to our Cutting Torches category,
as well as to your builder page: Frank S's Homemade Tools. Your receipt:

<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/homemade-pantograph-drive-unit"> <img src="/uploads/256224/homemade-pantograph-drive-unit.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/homemade-pantograph-drive-unit">Pantograph Drive Unit</a> <span> by <a href="https://www.homemadetools.net/builder/Frank+S">Frank S</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/pantograph'>pantograph</a> </div> </div> </div> </div>
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That's a good idea using an linear actuator Frank, especially if you can vary the rotation speed. Thanks, I think I'll set up a pantograph for my plasma, cheaper, quicker & easier than going down the CNC path. (I'd still like a decent CNC laser cutter though.)

Quote:

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Originally Posted by Bony

That's a good idea using an linear actuator Frank, especially if you can vary the rotation speed. Thanks, I think I'll set up a pantograph for my plasma, cheaper, quicker & easier than going down the CNC path. (I'd still like a decent CNC laser cutter though.)

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Bony this is the power supply unit I bought to control the drive motor speed

Ok don't know how the fishermans mate got in there but the controller was what I was trying to show