Modern Minecraft Ores Collection (Drop-in-Print, No Supports)

Do not enable supports, and you must print the inner ore first, because you will need to flip it upside down and drop it inside the outer shell during a print pause. It acts as a support for the entire top of the block, and will permanently seal it inside.

The 3mf files are already configured to pause the print at the appropriate layer, but you need to use File > Open, rather than File > Import if using PrusaSlicer to get all of these settings.

I added sacrificial bridges to the places where they are necessary, so print at 0.2mm layer height. After the print is finished, you can easily trim them off with a blade.

If you'd rather start from STL files, I provided a set with sacrificial supports built-in, which you should use with the following print settings:

Inner Ore Print Settings (Print this first, it drops into Outer Ore during the print)

• Fill Density: 0%
• First layer speed: 20% (the first layer will be visible, so print it slow for a good surface finish)
• Top solid layers: 0

You want the inner ore to be hollow and flexible enough to be easily pressed inside the outer ore during the print.

Outer Ore Print Settings

• Print pause (M601) at 30mm, layer 150, message: “Flip inner ore upside down and place inside now”
• Supports: None
• Fill density: 100%
• Fill pattern: Rectilinear
• Enable ironing: true
• Ironing Type: All top surfaces

The print pause is the second most important thing, because without it, you will not be able to insert the inner ore. (Which you totally printed first, because that is the single most important thing!)

The third most important thing is that you print everything without any supports, because supports will definitely prevent you from inserting the inner ore.

I also provided a set of raw STL files without any sacrificial supports for the purists out there. They are not designed to be printed as-is though, they are for reference purposes only.