douwe egberts kratky jar

thingiverse

Simple covers for douwe egberts jars to use for hydroponics (kratky). The covers are printed in vase mode and fit over each other to block light from reaching the plant roots. I suggest the first layer be printed in black to block light. The second and third layers can be printed in another colour, 2 layers to ensure the black doesn't shine through. The top has a 52mm hole and is designed for a 50ml net pot with a 55mm top rim diameter. The diameters of the 2nd and 3rd covers are 1.2mm larger than the previous one, designed specifically for 0.5mm extrusion width and 0.2mm tolerance gap. * You may be able to resize this in the slicer for different print widths but this is untested and may not fit as nicely as the curve moves up slightly on provided stl's for a better fit. Other Materials needed: * 50ml Net Pot * Rockwool starter cube * Hydroponic clay pebbles - Leca/Hydroton * Hydroponic nutrients of your choice * Plant seeds