Why the boqden length it's 67cm?

[neotko 1,417]

Out of curiosity and because I want to try some stuff. Why the bowden it's 67cm? What are the maths behind this? Thankss

[zoev89 73]

I don't think the 67cm is very critical. My bowden is already shorter (2 to 3 cm) then that since one of the ends was damaged. I also printer with a significant longer bowden (80cm) this also worked.

 

[fxmouton 0]

It's more or less the distance between the material feeder and the printhead when it's at the front right of the machine. Since you can't print without tube on the Ultimaker2, you need to have a tube about that long. The other solution is not to put anything on the very front right of the boardplate.

 

[neotko 1,417]

Well I was wondering if it was a math of filament mm + tension + distance to far corner. Specially since on UMO+ (the one I have) and on UM2 models it's the same distance. The number really doesn't seems random at all. Since I have changed my UMO+ to work with 1.75mm I was wondering if the 67cm wasn't the best idea for a thinner filament.