Steel frame cnc router design/build

[JAZZCNC]

Looking for some sort of approval (hopefully :-p) before covering all the parts in holes etc

Couple things I see and sure I mentioned this one before.? The Rear plate on the Y axis.? . . . It's not required and adds very little strength and actually can cause you problems with binding the bearings if not perfectly flat and edges of mating plates perfectly 90deg. . . . Drop it and save some money and weight.!!

Next is the Z axis motor arrangement.!! Why have you got the motor fastened to the front plate and sticking out the front.?
It looks to me like you have enough length to the Y axis front plate to mount ball-screw on this and fasten motor other way round. Your rails look shorter than the movement range your ball-screw will allow.
If so and it's longer than your Y axis front plate then just do away with the bottom bearing and shorten screw provided it gives enough screw range to use all rail length. On a short Z axis screw you can easily get away with this and it also makes aligning screw/nut that bit easier.!!

Other way is to have longer Y axis front plate and do it this way, both work.!! . . . Either way Your better off with screw and motor has I've described because it will allow higher acceleration from the Z axis which helps if your planning on 2.5/3D work.!!. . . .No point making the motor/drive work harder than needed.!!


Rest looks ok except that I'm not too keen on the low base frame due to large adjustable bed range.!!. . . .Do you really need that much adjustable range because it's compromising the strength quite a bit.?