Quote Originally Posted by printbus
When I built the printer, I had already purchased the "split collar" type of couplers before I learned there is another type that uses two pairs of set screws to grab the shafts. Now I wish I had purchased the set screw type instead. Sticking with what I had, I made some improvements.

Looking for advice. I bought 5mm couplers like you did printbus, and on their own they don't seem to be holding. I don't have the setup to tap them for set screws, and it looks like a tap and die set would cost more than new couplers.
So to me the options are:
  1. Look for some metallic tape. Did that work ok printbus?
  2. use the little rubber tubes from makerfarm until I can find couplers with set screws
  3. some other choice someone suggests.


I am getting so close to getting this darn thing finished. I have the hotend mounted, (mine came with a shroud to focus the fan for the hotend), and am going to start the electronics.