No special print instructions, Bottom's totally flat, so print flush. Inserts have a 0.1mm clearance all round for a total of 0.2mm if you want to print them in a different colour. though these will be tricky to do with an FDM printer. Created this with Fusion360 and have included the actual Fusion file also for you to play with.
This has been eyeballed from the official Fortnight images around the interwebs, if you want to tweak sizes, etc, just download Fusion360 and edit it yourself :-)
The author hasn't provided the model origin yet.
