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  • Plastic Smithing: How To Make your own HDPE Plastic Anything (DIY plastic lumber)

    If I wanted to make something like that I'd just 3d print it. More expensive, but a lot less hassle.HDPE is pretty strong. That said, if you wanted to reinforce it you could try melting loose glass fibers into it.

    (might just be that the oil was thick to begin with, I don't know)

    Okay, it gets weirder. Now that it's cooled I could check each individual component. The smell seems to be coming from the plastic, not the oil. The oil just smells like used cooking oil. However, the oil does not *look* like normal used cooking oil, it looks... don't know how to describe it, "partly polymerized"? Like, still fluid, but slightly gelled, or containing some slightly gelled material? Yet it's far too cold for polyethylene.Not sure what's going on here....

    I tried melting a block of polyethylene in an oven today. There was a lot of smoke and the outside was starting to brown The polyethylene had softened (and gone transparent) but was not at all melted. There's a chance that the smoke was at least in part from paraffin left over on the tray from the last thing I melted, but that wouldn't explain the browning. Is it normal for the polyethylene to do this? I'm surprised I didn't get any melt at all.... maybe it needed more time, but with the smoke and browning, I didn't want to risk a fire.Is the oil how you prevented smoking/browning, aka keeping it away from oxygen? Does it just melt at the bottom of the oil? How do you separate the polyethylene from the oil? Can you just pour it off? My purpose of melting it is to coat some aluminum t...

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    I tried melting a block of polyethylene in an oven today. There was a lot of smoke and the outside was starting to brown The polyethylene had softened (and gone transparent) but was not at all melted. There's a chance that the smoke was at least in part from paraffin left over on the tray from the last thing I melted, but that wouldn't explain the browning. Is it normal for the polyethylene to do this? I'm surprised I didn't get any melt at all.... maybe it needed more time, but with the smoke and browning, I didn't want to risk a fire.Is the oil how you prevented smoking/browning, aka keeping it away from oxygen? Does it just melt at the bottom of the oil? How do you separate the polyethylene from the oil? Can you just pour it off? My purpose of melting it is to coat some aluminum tube segments. I could always try melting it in a microwave (in a glass jar), but I only have one microwave and don't want to ruin it... I tried setting things up to melt it with an acetylene torch outside but couldn't find a lighter that worked, and didn't have the nenn to go to a store and pick up a new one :Þ

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