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Here is a great article on the subject, How to make your own filament by recycling old 3D prints | Part 1. At $20/kg for new material, it is going to be hard for recycling to break even; but, if the cost is not your concern, there are some options. Here is another creative option that I just saw... Cue amazing electric guitar riff: Guitar Picks (and ...


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Injection molding requires two major components: pressure and heat. So your question can be broken down into those two halves: can your average extruder handle injection molding temperatures, and can it handle injection molding pressures? Let's start with pressure. Per this page on the University of Minnesota's site, plastic injection molding tends to ...


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P20 mold steel is one standard. Hardened parts are required for long life, depending on the service and material (some materials are quite abrasive). You can get a small number of relatively poor quality shots out of epoxy if it is properly supported by a metal box. Your best bet if you want to include 3D printing in the equation is probably to use epoxy ...


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I ended up buying a little handheld 3D pen. It comes in handy when printing models that require assembly. You can use the leftover filament in the 3D pen. If you don't have a 3D pen, you can use a soldering iron (as long as you can control the temp) to weld items together. I works well for part repairs and assembly. The 3D pens is also handy for quick ...


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Temperature As polyurethane cures (or hardens), it undergoes a chemical bonding reaction, linking the mono- and oligomer strings in the components into long polyurethane chains. The chemical reaction is exothermic, it creates heat. So, we have a process that heats up the polyurethane mixture as it hardens, but how much? Well, it's hard to find numbers for it,...


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It seems I misread your question. 3D Printed Mold You were asking about (or the question now states) use of a mold release compound to prevent a molded part from sticking to a 3d print mold. Yes. It is always beneficial for the molded part to not stick to the mold. Easy separation and part removal is important for the life of the mold and for the ...


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Background SLA relies on the properties of UV-curing Resin. Most currently available UV Curing Resins harden to a solid, hard polymer, but that doesn't mean there are no other UV curing resins that are elastic. Most however will not be suitable for SLA or DLP systems! Polyurethanes, which can be flexible if cured in the right way, have not come onto the ...


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In my experience, polyurethane sticks to PLA like super glue, not good. But silicone and alginate doesn't stick at all. What I do is print the model of the mold with PLA or ABS, no matter. Then, cast a mold of the PLA model of the mold with alginate, then you have the negative of your mold. Now with this alginate mold of the mold cast your actual mold with ...


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https://preciousplastic.com/ Is a fantastic project that promotes plastic recycling into useful objects. They offer free blueprints, videos on how to build the recycling equipment, and offer suggestions on what to make of your recycled goods. Personally, I am looking into making garden bricks or paver stones. I have not found the ideal temperatures or ...


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Answers above are correct that no plastic mold will work for actual injection molding. Injection molding by definition requires pressure, pressure that would explode a plastic mold. If on the other hand you really just want to print a mold that you can pour epoxy into to get a shape, then you just need to consider a couple factors. How hot things are going ...


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Cura contains a few different so-called "special modes" which changes what the software does with your STL. One such special mode is Mold mode which, instead of recreating the object, creates a mold for the STL. It appears you may have that setting turned on, so disabling it will cause Cura to work as intended. To answer your other questions: Most ...


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Surely! First of all, a mold is, simply put, the negative of the item. So we need to make such a negative and give it some thickness. I have this funnel model... We start Meshmixer, import our funnel and then go into Meshmix and pull a cylinder into the frame. We size and align it to hide the funnel but for a tiny part at the top (or however much you need ...


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Chalk, as a ceramic substance, could be printed with a paste printer and if the substance can hold its shape during drying for a couple of hours. It might be easier to use a flexible filament like TPE or TPU to print a mold in which the paste can cure slowly to a point it can be safely removed. These filaments make release easier as one can flex them away ...


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Yes, technically you can but only for small parts. However the size of the object would be limited (about the size of a button). It has to do with the power of the heater element. Its too small to deliver enough thermal energy to heat enough plastic fast enough to fill a large cavity (i.e. anything larger than a button in my humble opinion). The previous ...


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An injection molding injector melts all the plastic needed for the shot and pushes it into the mold and through the sprue very quickly. Perhaps that is why it is called a "shot". Injection molding machines do not heat the mold to plastic-melting temperatures. This works because the plastic is injected quickly, and fills the mold before the plastic cools. ...


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It's important to provide information regarding the program you are using to model your molds. Even without that information, there are general methods to produce the portion you require. Consider that you already have the outer portion, what you describe reasonably well as a cookie cutter style. If you are using someone else's model cookie cutter shape, ...


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Stratasys offers a 3D printing system specifically for producing injection molds. They claim their Polyjet/Digital ABS line of printers can produce prototype injection molds good for 10-100 shots of the same mold and that the material can be used with regular injection molding machines. Of course, the molds still wear out quickly and are only suitable for ...


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Yes, this is very broad. That said... For high detail you want SLA. i.e. jewelry. If you just want a prototype of a mold, you can do a standard FDM style printer (95% of printers are FDM, and that number is a guess) Really, you should be asking what material you need for your mold, but you can open a second question for that. Do more research on injection ...


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