Archive for April, 2013

Linear Motion – Belt Drive and Screw

3D Printer | Posted by ShadowRam April 12th, 2013

The X and Y motion is controlled by the stepper motors hooked up to this chain/belt drive. I haven’t seen anything quite like it before. It’s a polymer chain of some kind. The good thing is the way the steppers are isolated from the chain that’s driving each carriage, I have some easy gearing options if I want to change the ratios for fast or slower movement.

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Tension looks like it is adjustable at the point where the chain meets up with each carriage.


The Z motion is controlled by a stepper motor with a lead screw penetrating through the middle of it.


Stepper Details

3D Printer | Posted by ShadowRam April 12th, 2013

Here’s a picture of the X and Z stepper motors. The X and Y are driven by the same model. I’ve looked up the spec’s online, and it’s comparable to the standard NEMA17 the reprap community appears to use except a little beefier. The Z stepper is a smaller stepper rated at 1A. I have some Pololu A4988 Stepper Drivers on order (with heatsinks). They should be up to the task of handling these steppers, but I’m also not expecting to require the full torque capability of these steppers. The mass of the 3D Printer head will be a fraction of what was mounted to it.

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Frame Acquired

3D Printer | Posted by ShadowRam April 11th, 2013

Frame in crate

This is a frame I’ve recently purchased off a co-worker. It was an old automatic mixer for some chemical company that isn’t around anymore.

It’s a heavy aluminium frame Gantry with X,Y,Z all controlled via stepper motors. I think I’ll turn it into a 3D Printer.



Welcome to ShadowRam Systems Blog

Uncategorized | Posted by ShadowRam April 11th, 2013

Greetings and welcome to my personal blog where I will be documenting my work on a few projects, and keep track of a few projects friends of mine are working on.