Retrofitting a 1986 Maho MH400E

Morning John,

Sorry, I only have those ones. You might need to turn up a special on a lathe.
Mark

Interesting design Andy. What would the output torque look like without gears?

at 118Pages into projekt
Question is the machine running as expected with Linuxcxnc

is there a resume of all
what costs did you go for A cording to the new HAAS Mini mill reveal that puts Townsend of machines on sale

IDK what the new rebates are for Haas machines, but when I was considering my options before getting the MAHO in late 2017, a Mini Mill was 25% off from our local distributor (something like a 25% off for 25 years in business kind of deal).

That price put it at over 3x the cost of the MH600E, even accounting for the expenses associated with my crayon copy of Mark's retrofit. At this point I could probably send it off to a rebuilding company for way grinding, scraping, painting and general mechanical maintenance and it would still come out cheaper than a new Haas at a discount.

Maybe you can sell me one when you do

It's an interesting concept, and I'd love to have the machines necessary to build one and try it. From what a tool maker friend of mine said, mechanical speeders are really loud, this design might be a little quiter perhaps?

The other day I found an ebay auction listing a set of 3 electric spindles, all of which could be mounted on one's preferred toolholder size (40, 50), complete with an inverter. Two were 40000 rpm at 4kW, and one was 15000 at 12 kW. The price was around 5000€, but that's how much a single Air Turbine costs from Hoffman (and those require expensive air compressors to run reliably). There was also a gizmo for setting the speed. I just hope that I'll keep finding such interesting offers when I have more money again!