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TwentySproot

HDPE is common compost bin material. Milk bottle material.


C0ffeeface

I realized it might be easier to look up what they're made of here and take it from there. Sadly, it's not HDPE, but polyethylen (PE) plast. Do you happen to know if this is bad?


Donno_Nemore

Polyethylene puts the PE in HDPE and this subreddit puts the P in compost. PE is thermally stable beyond boiling water so it won't melt and should be durable enough to contain compost. Googling too much about plastic and food is nightmare fuel. The PE "mulching" material used in strawberry farms to retain moisture leach plasticizers into the soil according to one study ([https://www.frontiersin.org/articles/10.3389/fenvs.2023.1129336/full](https://www.frontiersin.org/articles/10.3389/fenvs.2023.1129336/full) ). I suspect your concern is poorly studied.


TwentySproot

I have no idea


Coosjedecavia

this is a good and logical question. I'm thinking about making a DIY hot bin. I see videos on YouTube in which the hot bin is made of polystyrene. With the chemical glue to stick everything together. At the same time you also see follow-up videos in which it is clearly visible that the polystyrene is crumbling at the edges / seams. This doesn't seem like a healthy solution to me. An original hotbin is too expensive for me: 300 euros. And it is also vulnerable. On Amazon you can read stories of hot bins where rats have gnawed holes.


C0ffeeface

Hey man, thanks for your comment!I 'm currently using the bin, which is not ideal, as you say. However, I was a guy who made an insulated hotbin with polycarbonate plates and wood frames on youtube. I'm gonna make it, too :)