Iíve been building this CNC Router over the past 2 years. Progress has been
very slow due to the shortage dollars and major home renovation commitments.
Work on this project had to speed up before the arrival of number 4 son, so it was now or never.
Itís almost finished with just coat of paint and a little tidying up required.
The steppers are 2A, 180 in/oz Nema 23ís. The motor mount plates can be
removed and Nema 34ís bolted straight onto the stand offís if more power is
At this stage Iím very happy with the Nema 23 motorís although they are hamstrung with the voltage that can be put into the driver causing them to be a little on the slow side.
Itís running on a trial version of Mach 3. Great software, easy to use and understand, when I can afford it Iíll certainly be getting the full version.
The design like many others is based on the jgro concept. To increase rigidity Iíve added supports to the ĎXí and ĎYí rails which are fully adjustable allowing the rails to be accurately aligned.
To minimize movement of the MDF the main support members have been laminated with fiberglass between each layer. It can be seen quite clearly in photo 2.
The main table is cut from yellow tongue flooring sheet, which is completely moisture resistant supported on 40 x 40 RHS tubes
The whole assembly is extremely rigid with no structural movement under load.
Iíve been able to adjust and clock the table in the x, y directions to within 0.005Ē.
This has remained stable over the past couple of weeks.
The drivers and constant current source kits are from Oatley electronics. A do it yourself Job at a very reasonable price.
The main use for this machine is as an aid to the manufacture of patters for my home foundry as well as giving me something new to learn.
The reason for the name ĎMillion Dollarí. To get a leave pass to go and play in Man Land to build this thing my wife wanted to know if anything was ever going to come of it. I quipped back one day itíll make us a million when itís finished. Itís now got the nickname ĎThe Million Dollarí. I think sheís going to be very disappointed.
Congratulations! That does look like a very sturdy and well constructed machine. I'm sure it will give you many times in rewards versus what you put into it. I know it will be a glorious day when I finish mine, so I can only imgaine you elation! GOOD JOB!