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It is actually easier than you might think.I used copper foil as sold in rolls for electronics stuff for this.One side is covered with adhesive and the foil itself is very thin.After the foil is on and things like the hanger added you san either solder over the entire foil surface or galvanise it if the object in question will tolerate the acids used.If the object is quite sensitive you can cover it with petroleum jelly to protect it during the galvanising process. - Downunder35m
Think that's just solder ??? Pretty sure you can buy gold and silver jewellery solder - EnjoyJohnny
What sort of volume are you thinking? You could use a lathe with a chuck that makes use of the threads for the cap. Might require a cotter-pin, depending on direction of turn and/or the bottle's threads. For higher volume, you might want to attach some saw blades to the shaft of a high-torque motor then build a feed & exhaust system around that. Depending on the blade-spacing, you could shred HDPE to dust if that's what is needed (fi, heating pre-filled molds). For best results, air-cool the blades at the very least. At the same motor speed, smaller blades will heat-up faster larger blades and may begin to melt the bottles which would make a mess in the collection bin.Just some 'left-field' ideas..
hithis is an old thread, but I think I have a pretty easy way to do it at home - it is a 2 step process and this will only work with bottles - like the water bottles that are everywhere...firstcut the bottles into string here is a possible methodhttp://www.instructables.com/id/DIY-Plastic-String...Then grind up the string with something like this- it is a filiment pellitizer.http://www.thingiverse.com/thing:288465If you want to throw a whole bottle into the grinder - it will cost lots of $$ - but if you reduce the size of the material to only a few mm wide, then it gets much easier. This should get you to a pelletized PET bottle plastic you can then use to make filiment from pretty cheaply and close the loop between plastic junk and filiment
Hmm I wouldf have thought sink garbage disposal unit would do a good job!
Hi, I'm with you on the long term storage bit.. Seems the first sensible thing to do before spending more time/energy converting shredded material into something new. Did you get anywhere with the precious plastic machines? I'm looking for a machine of some sort that I could use to shred plastic bottles directly on the beach. Have you seen these guys? http://filamaker.eu/
I sent the files for the shredder part only for a quote to be water jet cut, came back with a quote of $889 NZD + GST (15%). Not really DIY and not really affordable at all!
I know this is a very old post, but those of you whom are still following the thread and have been waiting all this time, I might have found something. The guy on this website makes the grinder, compressor, extruder, and injector! All of it is DIY and he has the plans available FOR FREE. It'll still set you back a few hundred dollars, but the ROI is worth it once you're pillaging the neighborhood recycling bins for all their plastic. Once I find a metal working shop in my area, I'm definitely going to at least start shredding the plastic for volume reduction and long term storage. Then I've got to decide if I'm building up or pyrolyzing down the shredded treasure.http://preciousplastic.com/
I would also like to know how to create a good custom mold out of silicone for teeth whitening. I have watched a few videos on casting, but couldn't find anything on making silicone mold specifically for this purpose. I think it might have to take trial and error, and finding the right material for the job by trying different things out. Any suggestions would be helpful!
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