Hi,

peteeng

Regarding noise - surprisingly, this building has quite good acoustics. Once I asked my neighbors on the same floor if they heard any noise because at that time I was building a wooden workbench and using a lot of a thickness planer and a router. They said it was so silent that they sometimes wondered if I was still alive. I also wonder the same about all my neighbors. Nevertheless, I plan to build a sound-suppressing enclosure and put dampeners under the machine feet.

As for the weight of the machine, my understanding is that the maximum floor loading is specified as an average value per square meter, not per individual square meter, because otherwise every floor in every flat would collapse. I also plan to place the machine close to a load-bearing wall.

Datron is interesting, and thank you for the article explaining their thinking behind that machine.

mach_crafter

Thank you. I am considering making the machining parameters less aggressive, but for now, I treat those 300N of cutting force more like a benchmark and something I am aiming for.

joeavaerage

Thank you for your insight. I have been thinking about it for a long time. I plan to use a Chinese ATC spindle with a belt drive and a 2800 RPM AC induction motor. I am considering a way to easily change ratios, let's say between 1:2.85 and 1:1, to achieve a maximum of 8000 RPM at the cost of losing some torque, and a maximum of 2800 RPM. Or something like that

Something like this:
https://www.aliexpress.us/item/32568...2usa4itemAdapt
and this:
https://www.ebmia.pl/2800-obrotow/39...-120-19-g.html

They are also not very expensive.

What do you think?

Three-phase power is not a problem here. I have three phases with 16A per phase overcurrent protection. It is intended for a stove/cooktop.