380v Output Inverter Braking.

[m_c]

Thanks for looking and thanks for the offer too. I’ve bought a 3/8” butterfly impact driver with an idea of making one like the kurt design and if I can’t get a replacement electric one that is easy enough to butcher I’ll probably go down a similar route to yourself. My old Black and Decker one works quite well and get lots of use, I’m just predicting it’s going to let me down half way through a job. My only criticism of it is it’s a bit loud and when a job has twenty or so manual tool changes your ears ring after a while. I can’t recommend getting a big motor and vfd highly enough. A direct drive and getting rid of the noisy back gear makes the mill almost silent. I made up a large resistor bank for it and the spindle stops in half a second.

I bought a 3/8" butterfly gun, but I didn't think it was powerful enough, especially once you fit a 1/2" adapter, so I opted for a normal 1/2" gun.
That part of the project has got as far as machining a bit 6mm plate to make sure I've got the required dimensions correct. Next step is to machine a block of aluminium with those groves, and a couple holes for air fittings on the other. Then figure out exactly what I need fitting/regulator wise to control it.