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MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.

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Hi, your driving system is simple and works excellent. I would like to ask for a modification to make it even better.

I found that if I add a tension spring on the M3 screw to have a constant pressure on the filament, the print quality will be even better.
However, the current M3 nuts holder and the M3 screw position on the bearing arm is quite thin. Although adding a spring can be done, but I can see the plastic near the M3 nuts is elongated and turning into white colour.

Would you please do us a favour and update the design for me?

Thanks for your kind help in advance.