the knp is a replicator pro clone - so dual exrtruder.
But the spools are stored at the back of the printer and it uses a lot of oomph to pull the filament all the way up and over the case - which stretched flexibkles, as you can imagine.
Even with the dual extrusion, it's a pain.

Now the jlic-n-orint was made with a solid steel case - and I don't want to drill any holes lol
So My filament holder is a lot more problematic that any I;ve made for the other machines.
I'm getting there.

The soluble filament I have is this stuff: https://3d-print-works.com/products/...lament-1-75-mm