CR-10 Spring Caps

thingiverse

I took a trip down memory lane on the Wanhao forums where some users were dealing with shorts caused by metal springs rubbing directly against the hotbed circuitry. I then came across tinymachines shipping their CR-10s equipped with spring caps, which got me thinking. So, I quickly whipped up some caps using Tinkercad. It's probably a good safety precaution to prevent springs from digging in and causing electrical shorts. At the very least, adding fiber washers between the spring and bed or a smooth washer is a good idea, if you don't opt for caps. When it comes to materials, ABS or PETG are suggested since they're in contact with the heated bed. You can find more information on previous issues and Wanhao's fix page at http://3dprinterwiki.info/wanhao-i3-safety-notice-bed/