Reducing moving rods on Ingentis

I get it now. This is the manifestation of the discussion on using one fewer moving rods and linear bearings instead of bushings. But this actually increases the BoM, doesn’t it?

Why use a rod going all the way across instead of just a small bolt to hold the idler pulley?

@SirGeekALot because the rod prevents the 2 ends from getting misaligned.
Yes a slight increase in bom but no fiddly self aligning bushings or need for super straight shafts. Note the dual steppers per axis too. I learned a bunch from designing the ingentis and this is a possible alternative to a number of constraints to the Ingentis design.

Nice ideas there @Tim_Rastall ​! I like where you’re taking it :slight_smile:

I’m moving FAR FAR away from linear ball bearings. That noise. If I ever hear it again, it will be too soon.

@ThantiK yeah but I’ll take noise over bronze wearing out and delrin sticking under dynamic loads. There’s a reason why most industrial linear motion is achieved with ball bearings on hardened shafts.

I’m likely to get back on my Ingentis soon, finish it up, sell it, and do it all over again with Polycarbonite V wheels, and Openbuilds 2020.

Does polycarb wear well?

I thought it was tough, but soft?

@Jarred_Baines , dunno. Experimental. :smiley: