Mycnc - A budget, BIG cnc machine. by luuucas

Last crawled date: 3 years, 4 months ago

// Still in construction ! //
The objective of the project was to build the bigger cnc, with great performance for the lowest price !
Result : 500-600€ budget, 1400x600mm working area and 1800x1000mm external size.
The overall structure is very sturdy and can be even bigger (I have been limited by the size of my workspace).
I used the "Tops cnc" z axis for his very cool vaccum system but I am having trouble with the LM8UU bearings that are having a bit of play causing issues on hard millings. Appart from that it works well when there is not too much constraint on the milling bit. (for milling wood it's ok, I had trouble with MDF and bad milling bits).
I will put in the future more pictures and informations so that you can understand better how to build it.
The design is highly inspired from the "kayuworks cnc V1" so u can see his videos to understand better how to assemble the carriages for exemple.
For the build, I used :
800w Black Decker spindle (50€ in second hand, built in england !)
80x40mm steel bars (you should better use aluminium bars, they will be more precise and will need less work to put on the machine).
approx. 70 608 2RS bearings. (baught on motedis)
4 LM8UU bearings (as I may change the z axis this may change too).
20 meters of 4 pin led wire.
connectors and crimping tools.
Kit with 4 nema 23 and electronics https://www.banggood.com/fr/TWO-TREES-UNO-CNC-Kit-with-Controller-+-Shield-+-Nema-23-Stepper-Motors-+-TB6600-+-Limited-Switches-p-1679143.html?rmmds=myorder
1 T8x20mm-30mm Lead screw
24V power supply
emergency stop button.
10mm PU white timming belt
All of the pulleys necessary
280mm closed 6mm belt with its pulleys (for z axis) https://www.banggood.com/fr/TWO-TREES-60Teeth-8mm-Bore-Diameter-+-20Teeth-5mm-Bore-GT2-Timing-Belt-Pulley-with-6mm-Timing-Belt-for-3D-Printer-p-1601580.html?rmmds=myorder
2,54mm jumpers (for motherboard).
8mm lock collars (5pcs, for z axis).
8mm linear rod (2pcs, 285mm).
If you have any questions, don't hesitate to contact me, and if like the design, tip me !