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8 votes

Can commodity 3D printer extrusion hardware and filament be used for injection molding?

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 ...
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7 votes

Uses for PLA scraps

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 ...
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4 votes

Raw material for 3D printed injection mold

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 ...
4 votes

Uses for PLA scraps

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 ...
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4 votes

Making Polyurethane molds with PLA (or ABS) 3D printed master

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 ...
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3 votes
Accepted

Making Polyurethane molds with PLA (or ABS) 3D printed master

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 ...
3 votes

Can mold release agent be used in 3D printing?

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. ...
  • 4,418
3 votes
Accepted

Use SLA 3D printing to make a flexible mold

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 ...
  • 19.9k
3 votes

Uses for PLA scraps

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 ...
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2 votes

3D printed mold techniques for long and short term usage

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 ...
2 votes

Raw material for 3D printed injection mold

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 ...
2 votes

How to create a 3D model as mold for a 4-legged animal with parallel legs

In traditional mold making, this would require a "sectional" mold -- one that breaks into mutiple pieces to free the legs, rather than just two halves. Sometimes you can use a non-planar ...
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1 vote

Accidentally printed a chocolate mold instead of the object itself

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, ...
1 vote

Efficient way to create a "mold" of a solid object in Meshmixer?

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 ...
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1 vote

Chalk objects: 3D Printed or Molds?

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 ...
  • 19.9k
1 vote

Can commodity 3D printer extrusion hardware and filament be used for injection molding?

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 ...
  • 2,298
1 vote

Can commodity 3D printer extrusion hardware and filament be used for injection molding?

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 ...
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1 vote

Making a plunger

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 ...
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1 vote
Accepted

3D printed mold techniques for long and short term usage

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 ...
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