200MM 4x6 MM Diagonale Push Rod L200 Met Magnetische Bal Gegoten En Staalbal Voor Kossel 3D Printer
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I bought these for my FLSun Delta. They're not bad but need a bit of work. First, the carbon tubes are not all the same length, some varied by up to ~1mm, easily fixed but just be aware. Second, the balls are a little rough. If you want buttery smooth action, lap the balls into the magnets with a small amount of valve lapping compound (auto parts store) and then clean the ball and magnet thoroughly, then apply a small amount of a good (meaning, don't be cheap) PTFE/Teflon grease, like SuperLube. Use a good epoxy adhesive to glue the thread into the carbon. I didn't have the problem with M5 threads that others have mentioned, mine were M4 (Feb 2018)
all parts arrived in good condition and the bars are impressively light! Only issue is that they were shipped with M5 set screws that don't fit the balls or rods...