If only that statement were true.Quote
plastik
Hercek, thank you for the link you made up my mind is too much trouble doing the traxxas I am going the magnetic route.
My advice, don't drink the Kool Aid.
For everyone who says they are great, there are a bunch who couldn't even get them to work at all. Either the glue didn't hold the screws to the balls, weren't accurate enough and the effector wouldn't stay connected or it simply couldn't keep up. If the balls touch the magnets they can cause problems, if they touch and chatter you will destroy the magnet, and if the ball is too far away, you won't have enough hold (very fine line). I spent quite a bit to get my mag joints, then spent quite a few days getting them assembled. Two broke off the bolts before I attached them, another came of during assembly. I started over and got them all attached, I ran a calibration, made one print, re-ran calibration and removed them. The second calibration broke another bolt off of the ball, and during the print job, during high speed infill I was getting chatter... The magnets weren't strong enough. Another thing I didn't like was while working on the effector it came off in my hand more times than I could count. Great for maintenance, unless the hot end happens to be hot at the time. They also weight quite a bit, at high speed, it's a LOT of weight to be flinging around, I always feared it coming off and starting a fire.
Rod ends are cheap and dead simple. You bolt them on, they work. Yes they can develop slop over time, however they cannot fall off and can handle far higher speeds. As for the slop, there's been many ways to combat that from hair ties, to springs, to rubber bands and more. I've done 0.01 layer heights (yes, 0.01 not 0.10) at 200mm/s that looked like glass, using just rod ends and hair ties, you don't need mag joints to print good. Mag joints are expensive, frustrating and a limiting way to go in my opinion.
Do mag joints work, yes.
However, here is the dumbest part I find about them. People put them on for better accuracy, but because of their limitations, they run their printer quite slow. Why use a delta if you plan on printing slow and more importantly, if you print slow, every printer will print more accurate. If I wanted to print at sub 100mm/s speeds, I could have done a cartesian with dual heads and had just as much precision and dual heads.