6mm Improved X ends for Prusa with clamped rods
by beekeeper, published
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I mostly followed the wiki, and I'm pretty sure where i got it wrong. When I was placing the x-motor-end the instructions said something like, place the motor to the right when facing the front of the machine. Which is actually front and back? So at that point I got fed up with the differences between my hardware and the guide, so I did it my way instead. And that later led to me placing the x-endstop on the wrong side, despite that i was almost certain it was meant to be on the other side, but I wanted to have it next to the x-motor and ramps. Luckily, after setting marlin to home at x-max and moving the x-endstop connector to x-max it now works beautifully. Gotta love marlin and ramps!
I'm only printing at 220 deg C, but my thermistor is probably a bit off?
Good going. The 6mm hole is very easy to drill out and the crosbar structurally extremely stong, so it works well. Funny thing, probably more than half of reprap machines are mirror initially because they followed the old documentation and videos that led you down the funny path. I didn't discover my first machine was mirrored for at least 2 weeks after I was getting good prints. For a couple weeks, I used Blender to mirror the STL files when it became an issue. Use Netfabb's website cloud service, it isn't Windows only, and it cleans up stl files very well. Try lowering your nozzle temp when printing small cross sectional areas, 5 to 10Â° makes a BIG difference on some parts.
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At the same time, throw out your old motor couplers, and switch over to a flexible vinyl tubing for your Z motor Couplers (from the 5mm Nema 17 motor shaft to the new 6mm Z axis threaded rod), and your print quality will be considerably higher. Do make sure that the new 6mm rods are totally straight. Test them by rolling them on a flat table prior to installation, they should roll freely without assistance other than maybe an initial push. If they hesitate, you have a bent threaded rod, get another one, don't try to unbend it - unbending rarely goes well.
Everyone talks about upgrading to 6mm threaded rods, but no one uploaded the X-Ends to do this... Until now.
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