I recently printed a vermicomposter in PETG. It consists of a bottom reservoir which is supposed to catch leachate from the above compartments. I’m not sure the rate at which this will fill up, but the leachate is supposed to be diluted with water and used as nutrients from plants.

However, the reservoir leaks from the plug and from the front leg slots, at least when the reservoir is filled completely up with water. The leak from the plug I seem to have fixed with a combination of an o-ring and some PTFE-tape, but for the other leak I’ve been thinking of coating it with epoxy resin.

My challenge is actually finding such a resin, where the finished, cured product is food safe (since it will eventually find its way into the plants I intend to eat). Locally, I’ve not been able to find anything that is certified food safe, only various epoxy fillers and primers for boats.

The local 3D-print shop recommended this product which I could get through them: https://siraya.tech/products/siraya-tech-aegis-coating-systerm-for-resin-filament-prints But I’ve found some less than favorable reviews for that one in particular.

Anyone with experience water-tightening containers like this?

  • solbear@slrpnk.netOPEnglish
    2·
    9 days ago

    I am using PrusaSlicer. Not sure if that check box is present in that, or if it was added in OrcaSlicer or BambuSlicer.

    I might’ve printed with only two walls, I will need to check tomorrow when I’m at the correct machine. And thanks for the video recommendation, I will be sure to check it out!

      • solbear@slrpnk.netOPEnglish
        1·
        3 days ago

        Cheers - seems there are multiple things I could have done. I would rather avoid having to do a reprint, but it may be necessary.

        Upon closer inspection, I think the geometry of the bottom part is designed in such as way that it comes out with a lot of cavities (it is slanted, requiring multiple steps). It could be that it will be very difficult print properly to begin with.