I liked that video. It is a super fun format to see the whole thing come together in a few minutes. My impressions:
Seems pretty rigid. It is nice that it is limited to 80mm depth. 30mm tubing doubled up should be pretty rigid, although it is aluminum.
Linear rails seem odd in a cnc machine. They are expensive, and they don’t seem very tolerant to dust to me.
There was a lot of precision drill press work there. I am not sure how forgiving it is to mistakes.
The integrated drag chain and vacumn seems pretty nice.
Overall, I think it will work well for Ivan, but it isn’t as flexible as I would like. It also greatly depends on the user’s ability. Time will tell how well this works if other people start building them.