Quote Originally Posted by Syd_Khaos View Post
I meant 1 wheel per contact point.
Most of the I3 clones on google shop search have 4 contact points per gantry end, a full gantry bar being 8 contact points. Most designs are using 2 wheels per contact point.
I want to use 1 wheel per contact point, but have 10 points on a full gantry bar, with the wheels being on 3 sides of the ride rail.

I don't think it will be to hard to find the right wheels (I don't think it will be to easy either lol) as there is a little room to play with the v-rail. A taller thinner single wheel could be used, riding all the way to the inner rail. or something just the right width ti ride the V properly. If I can't find it in the industrial world I will look to skating. They make such a crazy range of sizes and materials in skateboard wheels. If nothing else I bet there is a skateboard wheel that would ride the V right and be soft enough material.
I'm only doing Y and Z on gantry trollys, X will be the plate and done on bars/lead screw. Bars are gonna be 380mm apart on center with the lead screw in the middle....that puppy not gonna shake much...in theory =)

I'm also gonna play with the idea of milling out a recess in the aluminum heat plate that would fit the glass build plate. Could be open on one side to slide plate out, and held with single clamp.
Ahhh, I was going to say 2 wheels would suck and 4 causes a lot of issues, as does 4 bearings that a lot of printers use, that was found out and 3 is the perfect match in a triangular pattern.

You should join that openbuilds forum and start a project as it has me interested at least (I suspect others as well).

My build had to have that many wheels because it was a mixture of UM+Replicator but using all V-Rail and no smooth rods at all.