Sturdy and Fast all Steel CNC , my first build

[Boyan Silyavski]

Just installed it at its new home. The precision continues to surprise me. Instead of accumulating, all small imprecision neutralized each other, may be pure luck but still under 0.01 -0.03mm, it seems i can not measure it properly without introducing error. No need though, i am happy.

Surfacing aluminum resulted in glass like surface, small marks are not seen by naked eye and scratch test with fingernail leave impression of trying to scratch glass.

The C23 Bob works like a charm. But the integrated spindle control is erratic. I supply it with 12v stable voltage and it plays the output to spindle with 0.2v witch translates +-200rpm, which makes the spindle sound annoying. Will contact the maker. As i see it i will change the small pot with a big one external, in the hope to cure this problem. All PSUs i use are overrated at least by 100% and brand ones, so may be its the pot.

Next machine - no Flimsy: 8 wire alarm cables, connectors to box, 1 component paint.

The 0.8kw spindle seems now/ as i knew from the beginning/ way underrated. This baby deserves 3kw one and will be called - The Reaper :-). I am boasting :-)
But for its purpose is ideal.

Here is a video of it working. Unfortunately i forgot to make video when it was slicing aluminum and took it when we were testing some 3D jobs. I am surprised from RhinoCam, quite capable and i was able to figure in a minute how to program the 3d job.

A little noisy video, but i wanted to be heard what sound it makes. If i dont forget in a week or 2 will be making some aluminum parts there, so will make another one.