Germinate Seeds With a 3D Printed Container
Intro: Germinate Seeds With a 3D Printed Container
Hey, This is Ben and I Code Your Venture Free. Actually, I am kind of obsessed with tidying and minimalism. Therefore, when I grow my microgreens, I also want to keep them neat and tidy. As a hacker, here’s my solution to solve the “Growing Chaos” problem. Design a 3D printed grid pattern container for the microgreens.
STEP 1: Measure the Size of the Seeds
In this experiment, I am going to use the broccoli microgreen as a tester. First and foremost, I use the digital ruler to measure the size of the broccoli seed. It’s around 3-5 mm.
STEP 2: Design the Grid Container With AutoDesk Fusion 360
Base on the size of the seed, I use fusion 360 to design a grid pattern system which can hold the seed and let it germinate. Since my 3D printer is not that accurate, after several trial and error, I finally figure out a grid holder that can place my seed.
In each of the grid, you can see that there is a little hole at the bottom. The purpose of the hole is to let the water drain out and create a space for the root system.
STEP 3: Design the Water Container Underneath
I also design another container to hold the water underneath. This design will guide the development of the root system to the boom. This is very similar to a hydronic kit. After several trails. Here’s the design that I finally come up.
STEP 4: Broccoli Seeds Start to Germinate
I start to plant some broccoli microgreens. I put 1-3 seeds in each of the grid in order to see the differences later on. After several days, the seeds start to germinate and the root system developed to the bottom as I expected. If you want to know the growing progress of these microgreens, please feel free to check out my Instagram later on.
STEP 5: Improvements
There are definitely some improvements to the design.
Instead of PLA, PETG is a better material for this project because it is food safe. ABS or PLA filament is generally considered unsafe to use with anything that will comes into contact with food. That's because ABS contains evil toxic chemicals which can contaminate your food and then.
Another problem is the oversized water container without any drainage. This provides a favorite environment for fruit fries. This time, I just simply use some plastic tape to cover up the container. In the long term, I will probably design a better water container that is the best fit to the grid system.
STEP 6: Conclusion
So this is the quick wrap up of the microgreens project. Thanks for checking out my weekend project. Have fun!
5 Comments
RobPaige 5 years ago
JohnC430 5 years ago
JohnC430 5 years ago
I dont have a warm place for the tray so perhaps i will try and make a heater of some kind, maybe with some 12 Volt car light bulbs or even buy some heater pads (except that I dont want to spend any money) so i will have to find a way to heat the tray from below. perhaps 10 Watts/120VAC; big job... 67 resistors, 22 Ohms, 0.15W dissipation on each to give a total of 9.8 Watts. all soldered in one long string connected to 120 VAC and insulated from each other and from the tray... Uggghhhhhhh... PITA project. gotta find another way... perhaps with a light bulb(?)... or even electrify the tray itself(?)... if i find a way I will post more info.
Maybe I will steal the heating pad my wife uses for her back(?) that will work great, but i risk getting caught and then she wont cook for me for a month!!! darn... seemed like a good idea but the risk involved is too great... ok forget that!!!
Rain123 5 years ago
I liked your instructable and video's :-)
Would it be possible to get your Fushion 360 design?
I would love to use that as a starting point, and add a lid or even LED lighting etc.
Regards,
Rein
JohnC430 5 years ago
Long ago I used egg cartons to germinate seeds. I put a little dirt in each "cup" and watered the seeds. However after some time they would die because I would forget to water them. I dont have a 3D printer but i will go back to the egg cartons and this time without dirt. Make a small hole in the bottom of each cup and add a couple of seeds.and let the carton sit in a disposable Aluminum basin that is used for cooking. Add water and REMEMBER to water once a week!!!