# Bad print and platform motor problem

**URL:** <https://forum.formlabs.com/t/bad-print-and-platform-motor-problem/3337>\
**Category:** Support & Troubleshooting\
**Created:** [January 18, 2015, 4:18pm UTC](https://forum.formlabs.com/t/bad-print-and-platform-motor-problem/3337 "2015-01-18T16:18:05Z")\
**Posts on this page:** 1\
**Showing post:** 10

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**Author:** ![Nicolas\_Rozet](https://avatars.discourse-cdn.com/v4/letter/n/34f0e0/32.png) [@Nicolas\_Rozet](https://forum.formlabs.com/u/Nicolas_Rozet)\
**Post date:** [February 15, 2015, 10:13am UTC](https://forum.formlabs.com/t/bad-print-and-platform-motor-problem/3337/10 "2015-02-15T10:13:51Z")

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Hi David, sorry to hear your problem.  
When contacted, the support told me to put some grease on the vertical screw. They recommand the “Magnalube-G PTFE” grease, but i can’t find it here in France so I put another PTFE-Teflon grease that i used in airsoft replica. You can find it in DIY store or Amazon. Just put some grease in the lengh of the screw and you will be Ok.  
It’s a little bit annoying to have to do it ourself and lacking of information about this.

For the DFU I got the same problem, i think i changed the usb (and plug it in directly in the PC) and it worked. There is another informations here: ["Could not open DFU device" with trying to update firmware](http://forum.formlabs.com/t/could-not-open-dfu-device-with-trying-to-update-firmware/823)

If you continue to have problems, feel free to open a ticket. The support is very reactive!

Hope this help.

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