Zoners,
welcome to my build log
I will build a woodworking router, work envelope about 2100x800x100mm which will be driven by servos directly on toothed belts. The gantry will be driven from one side only (we had a separate discussion about this) and i want to use structural extrusion by MK (Maschinenbau Kitz).
The linear guides are BWC T4 dual-vee bearings riding on angle iron screwed to special profile from MK (see pic).
Z-Axis is also directly driven by a 200W servo with brake and helical rack/pinion.
The work surface is t-track made from OSB, i will also drill holes into it to hold bench dogs and "wonder dogs" (see lee valley catalog) for part fixturing.
Gantry beam is a 50x200mm extrusion. Plenty stiff... Rest of the structure 40x40 and 40x80 extrusion and 10mm aluminium plate.
Will use UHU Servo controllers. The Z motor has a 1024 steps encoder, want to get at least the same for the big motors (530W) but they have 10mm axles which makes it hard to find matching encoders.
Average cutting force will be 100-150N.
I made some 3D sketches to show you. Not every nut and bolt is shown..
All the yellow components are aluminium, light blue is steel.