Spring is coming. I couldn't await gardening season approaching.
Time to get your hands dirty again.
This is a hexagonal Soil Block Press. It prints in one piece without support.

Enjoy

"If you want to start your plants indoors weeks before you can put them into the ground, soil blocks is the way to go. They have many advantages, but the main one is that soil blocks greatly reduce transplant shock, leaving you with more survivors in your garden. They won't create root balls like starter pots or trays, they don't limit roots in the soil like peat or paper pots, and they don't destroy roots like flats.

Making soil blocks requires a soil block maker, or blocker. The blocker compacts soil into plugs that come with a preformed depression for placing your seeds. Getting your plants off to a good start has never been easier" - text by appropedia.org/

***Update 06/15/20
Added a watering tray for the actual soilblocks: https://www.thingiverse.com/thing:4461161

**Update 02/13/20
New Version Erdtopfpresse.stl added with the pins included. Still printable without supports but your printer has to be good in bridging.

*Update 02/12/20
Actually it needs some Buttons for the depressions to plug in the seeds. Stl with buttons added. I screwed them in with wood screws 3.5 x 16 mm, but you can glue or weld them to the bases also.

A10m

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