I really liked the Catan set MioPrint maid with the layer changes to ad colour. However, I only wanted the 5-6 player expansion and not the other two, as such I designed my own box for just the parts required for the 2-6 player version.
I also didn't like how when assembled the border of different terrain tiles and the coastlines mixed so I thickened the base and printed the first few layers of each as the same sand colour. This meant I also had to thicken the base of the joints and coastline/ports. while remixing the terrain tiles I decided to cover the holes for the joints, so the joining pieces now have to be placed under the hex tiles themselves - This makes it more of a faff to assemble but does look great when built.
I also made my own set of printable development cards and reference cards using the first layer colour change method.
I would recommend using a Catan Assist / Catan Board Generator app:
https://play.google.com/store/apps/details?id=com.kaybogerd.catanassist&hl=en_GB&gl=US
Things to note;
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For a compleat game for up to 6 players you need:
Coastline/Ports/Joints:
NB. The 3mf files should have the colour changes and the correct number of pieces required for a set.
Boats:
NB. The set is designed not to have sailes for any of the boats as I couldn't find a neat way of storing them in my box design
You will need to add a filament colour swap at the top of the boat for the text to stand out.
Development cards:
NB. This uses separate prints, printed around itself to get inlayed designs.
print the detail/image inlay in black first then swap to a different filament and print the rest of the card.***
See the video for an example: https://www.youtube.com/watch?v=KV2AjyowXX4
Number Tokens:
NB. This uses the same colour swap technique as mentioned above***
You will want to print the 6 and 8 in a diffrent colour, (Probably red)
Resource tokens:
NB. The Resource box takes 13 tokens, so to fill two boxes for each resource you need 26 of each of the 5 resources.
We have always called it rock, not Ore, so I made my own rock token, but you can swap it with the Ore from Mio's original design if you prefer
Bandit:
NB. The stack requires multiple colour changes and then be glued onto the bandit - the 3mf should have the colour changes already set at the right layer
My bandit & stack is slightly smaller than the original to fit in my game pieces organiser
Larges army & Longest Road:
NB. The Longest road is Mio's original trophy but I remixed it with <Link> design from thingy verse to make a Larges army trophy
I printed both of these on my resin printer
For each of the 6 players (x6):
NB. I call Settlements towns as they look like town halls
The original game has 5 towns per player but I play with 6 as it goes neater into the box
The 3mf File has a complete set for one player with the colour change.
These can be very stringy when printing if you have bad setting/filament
The crossroads are not required to play the game but make the game look nicer
Resource Tiles:
NB. The 3mf files have the correct number of tiles of each terrain type, with the colour change, except the desert_Remix.3mf which you will need two of and doesn't require any colour change.
You have to place the joints under the terrain tiles as there is a key on the underside for the Joints.
On all the terrain tiles the holes for the joint keys have been covered except for the desert as I print my joint in the same colour as the deserts
No support is needed
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Box Composition:
The stacking pieces are designed to slot into one another and around their associated terrain tiles (for the terrain tile stackers) I think with a 0.2mm tolerance. They can be printed with or without support for the overhang.
You can stack up the parts in whatever order you like but here are my preferred means of erection;
The author remixed this model.