Initial upgrade complete. I modified my older vertical stacked x-axis design into a hotizontal configuration. Moved the idler pulleys in towards the centerline of the y-carriages to limit torquing. I changed the attachment method on the extruder cart to a weave design. This makes for easy retensioning, but is also very ridged. I also made it dual direct drive extruders.
The last design choice that has made a huge difference is o-rings around the linear bearings to allow for misalignment of the two bearings per rod. With my old design circles were always a problem due to bind at direction changes at 45 and 225 degrees. Now that I am not fighting the binding at direction changes my circles are nearly perfect. I was able to pass the nickel calibration print first try. I am also seeing if I can Improve things further with different linear bearing choices.
@Ricardo_Rodrigues1 thanks. With robust comes weight. Now I will have to test how much the added extruder weight has affected my max print speeds. I am sure I will have to dial back acceleration and non print move speeds.
@ThantiK free samples from local Igus rep. I love that they are so open to letting you try things at no cost. It’s for 1/2" rod. They gave me 2 x RJUI-01-08 and 2 x RJIP-01-08 to try. The RJUI-01-08 has the sleeves integrated with the bearing. And the inserts are replaceable for when they wear out (you can see the small hole where you push on the insert to get it out)
Excellent work @Eclsnowman . As you mention, I think you should brace yourself for some speed/accel reductions. Maybe Bowden tubes for the next upgrade?
Been thinking about putting all my design files, bom’s, notes, and pictures out there in a curated location for others to use and play with. Would anyone recommend anything in particular? I know many people use github. I am not a coder so am not familiar with git.
@Eclsnowman I’m no coder myself, you can get by with knowing just a few commands. @Cubehero uses Github as a back-end which gives it revision control. Unfortunately, it does not seem to pick up. There are still very few designs on it.
@Normand_Chamberland Thanks. I have shared my files here before. I will be cleaning up my models over the next few weeks and I just want to put them in a cohesive place for others to play with. I will read more about github. But I will also look into openbuilds and youmagine too that @Tim_Rastall suggested.
