/diy/ - Do It Yourself

>>1386816
30x30, you can see the 20x20s below the main frame, what the rails ride on. The entire structure is about 750 each way, print area will be 500.

>>1279923
CoreXY or delta. I personally prefer square printers so I'd go and have gone with CoreXY. But if you're new, best idea would be to look up plans for an existing printer and copy those rather than trying to design something from scratch. What you want to look for are things like
>lightweight gantry, potentially with a flex shaft extruder
>volcano nozzle and heater block
>wide GT2 belt, 9mm+
>either VSlot rails or linear guide rails, something that isn't shitty steel rods with LM8 linear bearings
>big motors, I designed mine for NEMA23 but most people stick to NEMA17
>maybe ballscrews for Z, this is not that important
>Z driven by a single motor
>preferably AC heatbed, especially if you want a larger build platform
>good cooling, I haven't gotten this far with my build so I can't say what works at high speed, but you need well designed delivery of air
>32bit controller, Arduino doesn't work well for high speed
Size doesn't make a huge difference in the design, most are pretty easy to scale either way. Except for rigidity of the frame, you need to put more effort into that on larger (300+) printers.