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MK3 Y-Axis Belt Tensioner

by edsped Jul 8, 2018
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Without dissembling my MK3 and counting/measuring, how would I know the size of my idler? It is the stock idler that came with my kit MK3 delivered early January 2019.

Stock Prusa comes with a 20 tooth sized idler, though it will be smooth not toothed, and will work just fine with this.

Whadda-ya-know... Yeah I just looked at my idler during a print and it is smooth. Thanx for the confirmation on the size for me.

Time to pull out my Prusament PETG Orange and print this to install when I upgrade my extruder assembly to the MK3S. (And print out the grease packing nozzle to PM all my bearings since I'm tearing the printer down anyway.)

Is your belt tensioner good only for 16T idler or also for 20T idler? Thanks

Sorry, it's for the 20T idler.

Perfect!! I need infact for 20T idler. Thanks for your reply