I've always wondered about the Igus rail. Did you move it around enough to measure backlash, slop or repeatability? I've heard others that tried a similar Igus rail say that it wasn't good for the application. I'm hard headed though and think that any slop should be adjusted out. Maybe a spring loaded mechanism or something if it doesn't decrease rigidity.by shanehooper - Extruded Aluminum Frames
I've seen some nice prints from clones but E3D tolerances and surface finish requirements are very high quality.by shanehooper - General
I used c-shaped or u-shaped aluminum extrusion from the hardware store. Just clamp the linear rail down to it and use the rail hole pattern for a template to drill the holes. It's light but gives just enough reinforcement to minimize deflection.by shanehooper - CoreXY Machines
I saw an older project by RichRap that has a similar belt path. I think he used cables to drive the motion system. I would look into his project.by shanehooper - CoreXY Machines