EDIT: If you can see this message then i haven't updated the files, so you need to reduce the x/y by 2% to allow the fitting of the new cardboard cores i have got going forward from March 2019 box.
Here we have the files that are needed for our sample spool that the cardboard cores for the sample slip onto.
Print 1 of each with your desired settings.
Each part will need rotating 90 degrees so it sits flat against the bed. Sorry for the inconvience
Please post a make if you do print one
If you want More information on the 3d printing mystery box then head to https://3d.scaldayt.co.uk
Build video will be availible on my youtube channel soon: https://youtu.be/mqQd3ulxAwI