Loading

MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.

Download Now

Report as inappropriate

I just found a spring that seems to work .The notebook with a plastic spiral from wmart called the Neon nights collection $1.97 and one book is plenty .I think there is yellow and black .I took 5 winding's and bent the ends level and that gives it just enough to hold the valves shut. The dia.is perfect and plenty soft . Hope this may help