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Openbuilds 4x8 cnc
I built this cnc using 2 z axis actuators thinking it would minimize deflection and it seems to be very sturdy. I used 2 1500mm c channels for my x axis, 1 1500mm c channel for my y axis, nema 23 stepper motors, dm556 drivers, 2 24v power supplies, smc5-5-n-n controller, 9mm wide belts, and the Hitachi m12vc router. So far it's working very well with a few hiccups. Programming the controller was a learning experience but I'm very happy with it.
Prototype Rack-n-Pinion 4'x8'
This is a custom gear rack drive machine with a 4'x8' cut capacity.
Build Author Paul Amelang Views 2758
4x8 CNC Router for Composites
Router for making plugs for composite part production, and for cutting CFRP.
Build Author Spiffcow Views 17156
Large inexpensive build that can cut a 4x8 ft sheet with room to spare. Can be built using only a 3D printer and standard parts -- no special CNC'd plates required.
Build Author Steven Sampson Views 9347
A CNC router designed to handle a 4'x8' sheet, for as close to $2000 as possible. The price barrier resulted in my choice to use timing belts rather than leadscrews or rack&pinion. Build List still being updated