X-Ends-Prusa i3 8mm Threaded Nut

thingiverse

I created these X-Ends to be more accurate with Z. The 8mm Threaded rods will allow this, read more below. These Ends also accept LM8UU Linear bearings for the guide rods. Important: When loading these files into Repetier-Host, I get the message that they are not "Manifold" & may not produce expected results. [Slic3r still slices them] I created these with Sketchup & it says they are fine, as were my prints. Why use 8mm threads?: ( I plagiarized this next paragraph) It's a very good idea to select layer heights that divide into even numbers of steps of your Z height, having a miss-match of steps as the object builds is going to cause problems - Just to explain this - a 200 step motor using 16x micro-stepping gives you 3200 steps, an M8 threaded rod is 1.25mm per complete revolution so 3200/1.25 = 2560 So 1mm of height (Z) movement takes 2560 motor steps, a layer height of 0.3mm takes 768 motor steps. If you set a layer height of 0.32, that needs 819.2 steps - not an even number of motor steps, so not ideal. I can set layer heights @ .01 .02 .03 .04 & get exacting results everytime. I just recently printed a 150mm tall screw with exacting measurements. Print Settings Printer Brand: RepRap Printer: Prusa i3 -home built- Rafts: No Supports: No Resolution: .02 or .03 Infill: 25% Notes: The 8mm nut fits snuggly but use a soldering iron to melt some PLA over the edges to secure it in place