The project is not a straight forward construction of a CNC machine. It's making people understand where the weak points are and how things work in general. The series of machines will end with a CNC that can process aluminium and eventually even harder materials.
The first machine of the 3.x series is made of cardboard and paperclips:
At the end of the video you can see a prototype of the mechanics using 3mm fibreboard. The work area is around 20x20cm which is the largest type of machine I have (currently) in mind.
The second machine is a DIY printer:
The video is about linear drives and motion sensing with the printer at the end.
I have made a deal with a local printer repair shop: I can get devices that are definitely not worth repairing for free. The DIY printer is mostly made of old printer parts.
During the Citizen Scientist section of this year's HackadayPrize I was evaluating what kind of motion sensing is best for the first CNC router. I will use the "classic" approach and mount a sensor wheel on the thread of the linear drive. I got a lot of feedback (especially on YouTube) and there are options available that I will test some later when the mechanics runs.
To my mind, a CNC router is the mother of automation. I will build the mechanics during this section of the HackadayPrize that lasts until August 22nd. A lot of manual work comes before automation starts...
My personal assistant made it's first run very close to the deadline of this year's HackadayPrize.
More machines will follow...