Original Prusa i3 MK2/MK2S/MMU pinda probe cooler

thingiverse

The PINDA probe on the original PRUSA i3 MK2/S has an achilles heel: when it heats up, it detects the bed too early. (This will be remedied by the soon to be released PINDA 2 which actively compensates for the temperature of the probe). This is particularly a problem when printing materials requiring a high bed temperature in an enclosure, especially if a print is aborted and restarted soon afterward. This cooler helps with this issue by blowing unheated air from outside the enclosure over the PINDA during the bed heating cycle. MATERIALS REQUIRED: 1x [EK1713 Limit Switch](https://www.amazon.com/Gikfun-Micro-Switch-Arduino-EK1713/dp/B015W8S8NA/ref=sr_1_1?ie=UTF8&qid=1510201172&sr=8-1&keywords=EK1713&dpID=512o2Xj2CoL&preST=_SY300_QL70_&dpSrc=srch) 1x [50X15mm centrifugal fan](https://www.amazon.com/Connector-Cooling-Blower-50mmx15mm-Laptop/dp/B00MJU6JR2/ref=sr_1_1?ie=UTF8&qid=1510201308&sr=8-1&keywords=DC+12V+0.15A+2+Terminals+Cooling+Blower+Fan+50mmx15mm) This can be either 5v or 12v, depending on how you plan to power it. 2-3 feet of [9/16" OD Vinyl tubing](https://www.menards.com/main/plumbing/rough-plumbing/pipe-tubing-hoses-fittings-accessories/hoses-tubing/vinyl-tubing/9-16-od-x-3-8-id-x-20-clear-vinyl-tubing/p-1444442674691-c-8584.htm) Commonly sold by the foot at most hardware stores Wire Power supply for fan M3X10mm machine screws (x8)