{"product_id":"cat-grass-growing-kit-for-canning-jar","title":"Cat Grass Growing Kit for Canning Jar","description":"\u003cp\u003eThis is a set of models to grow cat grass hydroponically in a standard or wide mouth canning jar.\u003c\/p\u003e\u003cfigure class=\"image image_resized image-style-align-left\" style=\"width: 42.34%\"\u003e\u003cimg src=\"https:\/\/makerworld.bblmw.com\/makerworld\/model\/DSM00000000859590\/design\/2024-02-29_6i8qid0ed2rs.jpeg\"\u003e\u003c\/figure\u003e\u003cp\u003e\u003cimg class=\"image_resized\" style=\"width: 24.06%\" src=\"https:\/\/makerworld.bblmw.com\/makerworld\/model\/DSM00000000859590\/design\/8d3bb2a4-ab9d-4bd5-bf62-ae74c1409ea4.jpeg\"\u003e\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eWant to keep your new cat grass upright, despite your cat's best efforts?\u003c\/p\u003e\u003cp\u003eCheck out this companion print - \u003ca target=\"_blank\" rel=\"noopener noreferrer ugc\" href=\"https:\/\/www.printables.com\/model\/499141-base-for-wide-mouth-canning-jar\"\u003e\u003cstrong\u003eBase for a Canning Jar\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg class=\"image_resized\" style=\"width: 44.98%\" src=\"https:\/\/makerworld.bblmw.com\/makerworld\/model\/DSM00000000859590\/design\/2024-02-29_6a416sgilahw.jpeg\"\u003e\u003c\/p\u003e\u003ch4\u003eNon-printed Parts\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ecat grass seeds\u003c\/li\u003e\n\u003cli\u003ewater\u003c\/li\u003e\n\u003cli\u003estandard or wide mouth jar - models fit standard Kerr\/Ball jars\u003c\/li\u003e\n\u003cli\u003ejar lid ring \u003ca target=\"_blank\" rel=\"noopener noreferrer ugc\" href=\"https:\/\/www.printables.com\/model\/497558-wide-mouth-jar-lid-ring\"\u003eor print your own\u003c\/a\u003e\u003cul\u003e\u003cli\u003eNOTE: standard metal rings eventually rust\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003ePrinted Parts\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ejar adapter\u003c\/li\u003e\n\u003cli\u003eseed grate\u003c\/li\u003e\n\u003cli\u003etop grate lid\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eInstructions\u003c\/h4\u003e\u003col\u003e\n\u003cli\u003epress-fit seed grate into the bottom of the jar adapter\u003c\/li\u003e\n\u003cli\u003eput assembly into jar\u003c\/li\u003e\n\u003cli\u003eadd cat grass seeds to just cover bottom of grate in 1 layer\u003c\/li\u003e\n\u003cli\u003efill water to just touch bottom of seeds\u003c\/li\u003e\n\u003cli\u003emist seeds thoroughly\u003c\/li\u003e\n\u003cli\u003einstall top grate lid\u003c\/li\u003e\n\u003cli\u003einstall jar lid ring\u003c\/li\u003e\n\u003cli\u003e…wait\u003c\/li\u003e\n\u003cli\u003eonly add water if\/when water level reaches below half and fill back to roughly half\u003c\/li\u003e\n\u003cli\u003eafter ~2.5 weeks, toss what’s left and grow a new batch\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003e\u003cstrong\u003e*NOTE\u003c\/strong\u003e: I am not an expert in hydroponic growing, so take the above with a large grain of salt.\u003c\/p\u003e\u003ch3\u003ePrint Settings\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: PETG recommended. PLA works, but avoid matte or rough surface finishes that can be difficult to clean effectively.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupports\u003c\/strong\u003e: none\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrim\u003c\/strong\u003e: not required on machines with calibrated first layer\/good bed adhesion\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNozzle\u003c\/strong\u003e: 0.4mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLayer height\u003c\/strong\u003e: 0.2mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e \u003c\/p\u003e\u003ch3\u003eUpdates\u003c\/h3\u003e\u003ch4\u003e12\/12\/2023\u003c\/h4\u003e\u003cp\u003eI have had a great deal of success with standard wheat grass seeds. They seem to sprout more consistently than the oat grass or the “cat grass” seeds I've had and my cat doesn't seem to notice a difference.\u003c\/p\u003e\u003cp\u003eAlso, I have found I get higher yield sprouting the seeds outside the jar. I put the seeds in a soaked paper towel between 2 plates for a ~2days, then transfer them into the jar. It is totally possible to sprout seeds directly in the jar, but not as high of a yield.\u003c\/p\u003e\u003ch4\u003e9\/16\/2023\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eadd standard mouth sized models\u003c\/li\u003e\n\u003cli\u003efix orientation of wide mouth models for printing\u003c\/li\u003e\n\u003cli\u003eadd print files for standard and wide mouth kits\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eI have found the most reliable way to germinate the seeds is to do so in a very damp paper towel until root starts appear on a majority of the seeds. Then move the seeds into the mason jar. Keeping the seeds damp for 1-2 days without submerging them is very dependent on air temp\/humidity. So, I have switched to the soaked paper towel method to get more reliable yield even though it is an extra process.\u003c\/p\u003e\u003ch4\u003e6\/29\/2023\u003c\/h4\u003e\u003cp\u003eI am working on updating instructions and the top grate model. Should be updated in the next week or so once I get some success on the changes.\u003c\/p\u003e\u003cp\u003eModels\u003c\/p\u003e\u003cul\u003e\u003cli\u003eour cat pulls the grass right out the top grate, root and all. He loves doing it, but he doesn't actually eat the grass after he has pulled them out. So, I will be updating the top grate model to be narrower.\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003eGrowing\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eI have been growing “cat grass” that is in fact oat seed, so my experience may differ from yours.\u003c\/li\u003e\n\u003cli\u003esubmerging seeds is unnecessary, and from my testing has caused a very high failure rate of the seeds. I am testing a couple methods:\u003cul\u003e\n\u003cli\u003edamp paper towel germination outside the jar for 24, 36, 48hrs\u003c\/li\u003e\n\u003cli\u003etesting an updated method of spraying seeds and fill water to just touch seeds through grate, then don't touch ever. Unless and until the water level is\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eKelp nutrient solution - inconclusive impact and I am having success without kelp nutrients, so I won't be recommending for now until I have more testing\u003c\/li\u003e\n\u003cli\u003eour tap water (through a faucet filter) seems to be working just fine. I have not tested it for PH or whatnot.\u003c\/li\u003e\n\u003cli\u003edaily misting seeds has caused fungus to grow and doesn't seem to have a positive impact on growth, so I won't be recommending for now.\u003c\/li\u003e\n\u003cli\u003eeven when I have a full jar growing the grass, not all seeds are sprouting. I attribute this to too many layers of seeds overcrowding, but needs more investigation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cfigure class=\"image\"\u003e\u003cimg src=\"https:\/\/makerworld.bblmw.com\/makerworld\/model\/DSM00000000859590\/design\/2024-02-29_kbo629ds1h1e.jpeg\"\u003e\u003c\/figure\u003e\u003cp\u003eDesign by bjamdesign on MakerWorld (license: BY).\u003c\/p\u003e","brand":"Mymadmanlab","offers":[{"title":"Default Title","offer_id":67417336840496,"sku":"MW-859590","price":6.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0987\/0809\/5280\/files\/0_ca7e5898-5bfb-41a8-b53e-e05fa99b84e8.jpg?v=1785442388","url":"https:\/\/mymadmanlab.com\/products\/cat-grass-growing-kit-for-canning-jar","provider":"Mymadmanlab.com","version":"1.0","type":"link"}