Comment by lukan
5 hours ago
Printing is good for prototyping and if you are making small numbers/need to have a distributed manufacturing (because of bombs falling on them).
But for mass producing a solid design, 3D printing is the worst solution, because it is slow. Injection molding would be the fast (and cheap) way.
Yeah but it's fast enough, light, portable, repairable, can be setup directly in your bunker in the middle of the wood if needed, etc.
You're still thinking like it's 1990
3D printing will remain constrained by fragile centralized supply chains for feedstock until someone develops an effective practical decomposer/recomposer that can break down common plastics into their constituent monomers, oligomers, or other reusable chemical building blocks and then reform them into high-quality filament or resin on demand.
And then, the next step for deco/reco will be the metal frontier.
Unless you think you're only going to need a couple spools to get the job done before never using the thing again.
And where do you get in the woods all the other mass produced parts needed for a drone, like chips, sensors, engine, battery, ..? Unfortunately 3d printers ain't replicators yet.
So yeah, if you have special needs, modifying a special ops drone, or simple part printing, they are great.
Or like I said, distributed manufactoring.
> But for mass producing a solid design, 3D printing is the worst solution, because it is slow. Injection molding would be the fast (and cheap) way.
~10 years ago I was really into designing my own "drones" (but the kind that don't kill people) and I primarily used a CNC machine (Shapeoko 3).
Multirotor vehicles are a good match for designs that are a series of mostly flat plates connected via simple standoffs and you can knock those out really quick with a CNC machine.
Injection molding is certainly much better than 3D printing for scale, but CNC is a nice middle ground that allows for quick manufacture while still having a lot of the same flexibility for iterative design that you get with 3D printing.
CNC is a terrible choice if you’re making flat plates or can modify your design to use flat plates + basic bends and stand offs. Laser or water jet are significantly faster and cheaper.
> CNC is a terrible choice if you’re making flat plates or can modify your design to use flat plates + basic bends and stand offs. Laser or water jet are significantly faster and cheaper.
Laser cutters and waterjets are CNC machines.
And yeah they are generally faster than using a drill, but cheaper is situation specific (can be, depending upon the scale).
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