iso30 spindle grinding for homemade cnc 

Thanks. Yes, i'm lucky because i'm gaining knowledge and sense for precision (working with microns everyday).

Да у всех же дома полно шлифовальных и прочих станков 😀

@@user-dl1te2pf2d I'm hoping that some day everybody will have some kind of a cnc at home, because i'm planning to manufacture mini machines. 😂

Thank You!

Well, i made it at work under 3 microns, as you can see in my latest video how it is made. At home i have a cheap copy indicator that is called miluloyo, spindle is not tightened properly and bearings are crap. Please comment in english because i have to translate cyrilic and google translate is not the best.

😂

Yes, and it is made for milling machine.

It's short because i designed it to be sandwitched between two bearings (which was a bad design) and if it was longer, i would not be able to grind it because of a placement of a dresser. But i'm planning to build another spindle with better design.

Depends on what are you planning to do but i think that you can both. At company where i work, we use 20MnCr5 because it has a great properties for surface hardening and we produce cnc toolholders and pull studs. 4140 is medium hardenability general purpose high tensile steel and 4340 has beter properties than 4140.

Hello, this is 20MnCr5.

Хм. Не самый лучший выбор языка для связи с автором видео.

It is a cheap Chinese bearing and the name is Codex. But i think that this is bad design of my spindle, so i'm making a new one for my forth axis.

Thanks. I made spindle shaft under 3 microns, but because of a bad design and cheap bearings it wobbles around 0.01mm 😅