Originally Posted by
stewi
No personal offense, but:
I fear you are going to early from drawing to a cast:
I mostly see straight wooden plates and too few taper angles as you mentioned.
Apparently, you tilted the plates, but the internal ribs look like straight plates.
It will be quite difficult to implement all the internal radii with filler.
In some areas the material is much thicker than in others, which will likely cause distortion in the cast. Consider beefing up the ribs to make them as thick as the walls.
The weight of the head doesn’t appear to be a match for the z-motor size. Have you done calculations or tests? Keep in mind, most data you get is the holding torque of a stepper, not the dynamic load. Do you have the efficiency data of Z lead screw?
I can’t detect any wiring of motors and limit switches in the drawing. If not implemented in the design, than you may need a hole here and there where there isn’t.
You mentioned coolant later to be added. So you’ll need skirts and covers for your linear bearings and ball screws. If not already implemented in the design, I fear, it will either not look pretty or skirts will leak against the iron cast.
There are no fasteners in your design, so I do assume you'll drill and tap holes later. I find this quite risky as you may oversee one or the other screw head can't be reached or needed to be counter sunk.