One of my machines,

One of my machines, it is the best that I ever build (already 4 machines done).

Looks extremely sturdy for the small spindle you’re using.

I guess the frame doesn’t flex even under the highest loads but the improvised spindle does give a bit.

Are you interested in a chinese 2.5KW spindle wit ER11 collets?
I’m thinking of switching to an affordable ATC one next year.

I have plan to build my own spindle with low RPM, But in current moment I have need to build machine with larger workspace and I do not have time and money to end this one.