Welcome to the SeeMeCNC Community

Check this out, someone made a delta without roller bearings, but used magnets all around.

Per the comments, he's using paper napkins as a bearing surface between the magnetic carriage and each of the vertical arms.

Just like using magnetic arms for the effector, I like the idea of "zero-slop" carriages, but I wonder if the "napkin bearings" will wear down in a way that will affect calibration accuracy over time.

[youtube]http://www.youtube.com/watch?v=gv2BJGRmo3Q[/youtube]

Take the 's' out of 'https' and it will embed.

So it's sliding on napkins instead of using rollers? But the magnets are holding the carriage to the rail?

Not so sure that's a step forward.....At first I thought it was a contactless levitating system but it's not.

Also, I'm getting tired of seeing pencil thin arms on delta bots, it kills any rigidity that would have been there otherwise.