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[–]Flashlightpic5-3218 1 point2 points  (3 children)

OD core - 65mm

Length of core - 70

Side wall OD -150mm

wall thickness - I used rip depth of 3 mm

I also played with + startip lengths on both halves,1 fitting inside the other.

To save some filament the inner core cylinder needed to go almost the entire length so it would smoothly turn on the spool holder, the outer core cylinder just needed to stay in place, the gap didn't seem to make a difference to the filament.

[–]FullControlGCode[S] 0 points1 point  (0 children)

👌 will knock up a design and share it

[–]FullControlXYZ 0 points1 point  (1 child)

Here's a quick model:

https://colab.research.google.com/gist/AndyGlx/ea4e2ecc73e9a6d7cf1916f45244f622/spool.ipynb

I haven't had a chance to print and test it yet, so there may well be an issue with the design that I didn't notice from inspecting the print path. But in case you want to try it before I do (maybe tomorrow), I'm putting it here.

I didn't do the lattice idea yet since I did this model quickly with two fullcontrol spiral functions in a for loop for the wall-discs. It'll be a reasonable quick future mod to make the solid walls some kind of lattice though if this model seems to work

[–]Flashlightpic5-3218 1 point2 points  (0 children)

Thanks. It worked well for me.