Large Delta printer build - advice and suggestions welcome

[curious aardvark]

I get the rails slide up and down - but you still need rods to connect the rails to the effector.
The sliding up and down is not a real issue with a delta (got 2). And good wheels tend to be smoother than rails.
Don't really see what you gain and why you don't need to connect the effector to the sliding part with rods.
The effector and print head still need to be able to move around, so you still need play in the rod ends.
I like the magnetic ball and cup connectors.
All I see - with deltas and rails, is a more complicated setup with a lot more places things might stick or lose glide.


where's the tensioner in the picture - can see a small one - just - lol
Reckon a clothes peg spring might have done the job, they're quite a bit larger than the 6mm belt springs.