This is a remix of iamjonlawrence excellent "1405 300mm No Sag, Printrbot Simple" http://www.thingiverse.com/thing:372467 for his Y-Plate only. I have a 2013 version of PB Simple and my Z-Nut doesn't fit well in jon's version. It's too loose. So i've made a new version of his Y-plate that fits my Z-Nut exactly. I've also made a Z-Nut item for those who broke or damaged their Z-Nut : http://www.thingiverse.com/thing:546652 There's 2 versions of the plate : [UPDATE 19/11/2014] : if you have a PBSME from 2013 do not print this yet. The model has 5mm of extra between the 2 Z bars, that makes it unusable. I'll post the good version soon. [UPDATE 21/11/2014] : you'll find 2 specific files ("simple-2013") dedicated to the Printrbot Simple Maker Edition 2013. This fixes the 5mm difference between the two Z bars. Holes to hold the bearings are squarre (don't worry zip ties still goes there) and a bit tight but that's on purpose in order to get evrything rigid.