Parametric Seed Starting Tray

I wanted a seed tray with deep pods to try starting bush beans as transplants and made it parametric, so I'll always be able to print the seed tray I need.

This was my first attempt at a fully parametric model, so please play around with it, and let me know how it works for you.

Slicer Settings

I designed the trays I printed to have either 1mm or 0.8mm walls, so they could print quickly with 1 perimeter around each pod. Slicing an STL, the corners got a little weird unless I set the extrusion width for perimeters to 1.2mm or 1mm respectively, but I could set my extrusion width to equal the wall thickness if I was slicing a STEP file. It's also important to use Arachne perimeter generator.

Printed in PETG

*If you're using the pod_spacing parameter, check bridging angle and set to 45º or 135º to avoid attempting to bridge the entire length or width of the tray.

Basic Parameters

• pod_width/pod_height - adjust the size of the tops of each pod
• pod_depth - adjust the depth of pods
• rows - adjusts the number or rows of pods
• columns - adjusts the number of columns of pods

Advanced Parameters

• wall_thickness - adjusts thickness of side walls to best fit print settings
• base_thickness - adjusts thickness of base to best fit print settings
• joining_section - adjusts the top portion that joins the individual pods (>10mm recommended)
• pod_spacing - This adds space between the pods. I thought it would help making them stackable, but it doesn't seem necessary. I've been leaving it at 0 to save space and plastic, but it's there if you want it.  — check bridge angle if using
• sacrificial_bridge - I haven't used this, but it's there if you want to try printing the pots up-side-down. Enter your layer height to create a bridge across the drain hole for the base to print on. Leave as 0 to print upright.