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New from Old / Re: The Sequel - Oh Blimey I bought a CNC Lathe (Beaver TC 20)
« Last post by awemawson on January 21, 2026, 06:16:42 AM »Not been able to continue this push until this morning (yesterday - standby generator failed it's regular 'test start' I fire it up every few weeks and it's a good starter - should be it's brand new. I start it, then turn the fuel off and run until the carb is empty to stop it gumming up. Well it's gummed up and needs a carb strip
too much grovelling at floor level so woke unable to move - 600 mg of Ibruprophen and I can now move so off to the workshop.
Lathe fires up correctly, I can traverse over the reference points, initialise the tool turret, select tools at will, drive the main spindle clockwise and anti-clockwise - in fact EVERYTHING IS WORKING
Now the big caveat is that currently the tool disk is currently empty - no tool holders fitted so minimal weight for the servo system to fight. (There is approximately 45 kG of tools when all twelve positions are fully populated)
It was while diagnosing erratic positioning of the tool disk that I managed to blow up the Siemens Simodrive AC servo system so I'm tredding ever so carefully at the moment and only taking small steps.
too much grovelling at floor level so woke unable to move - 600 mg of Ibruprophen and I can now move so off to the workshop.Lathe fires up correctly, I can traverse over the reference points, initialise the tool turret, select tools at will, drive the main spindle clockwise and anti-clockwise - in fact EVERYTHING IS WORKING

Now the big caveat is that currently the tool disk is currently empty - no tool holders fitted so minimal weight for the servo system to fight. (There is approximately 45 kG of tools when all twelve positions are fully populated)
It was while diagnosing erratic positioning of the tool disk that I managed to blow up the Siemens Simodrive AC servo system so I'm tredding ever so carefully at the moment and only taking small steps.
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