CTC Prusa i3 Pro B - Z-Axis Motor Coupling Clamp

by badgerchap Jan 27, 2018
Download All Files

Thing Apps Enabled

Please Login to Comment

And an other bad coupler !


Any chance you could explain why you think it’s bad, rather than slagging it off without explanation?

My remark is a warning for people seeing this.

Not my job to teach you basic mechanical engineering.

Clearly not your job to avoid being an arse, either.

As a "researcher" how about doing some research about these couplers ?

As an engineer, how about engineering yourself a bridge to chuck yourself off?

Look mate, I don’t come around your “designs” slagging them off. I also don’t go around pointing out how ridiculously arrogant you (and they) are because I’m not that kinda guy. Now if you don’t like something on here, fine, don’t use it, but there’s no reason to open up a personal vendetta just because you’ve got sand in your vagina about z-axes. There are plenty of designs on here similar to mine and you don’t seem to have started mouthing off about them.

Perhaps, though this may be hard for a mere engineer to understand, people buy things like 3D printers because they want to learn. Perhaps people participate in online forums because they want to share their learning with others. Or, perhaps people just do these things so they can be dicks. You tell me.

Comment on people’s stuff if you’re going to be helpful. Otherwise maybe you should start work on that bridge.

So for anyone else reading this, after MKSA’s extraordinarily helpful comments, I’ve been experimenting with various alternatives to this coupler.

I’ve tried universal joints, both printed and machined (I.e. purchased) and also flexible couplings. I’ve also tried the original rubber tube supplied with the CTC i3 Prusa Pro B. All of these produced inferior prints to my coupling design, some really bad (flexible couplings were awful).

Obviously this only applies to the CTC i3 and I can only speak about my experience, but if I were you I’d use your own judgement rather than listening to piffle from self-proclaimed experts.


Thank you for designing this. I will print and try. I can´t get worse than the rubber tube provided in the kit :).