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That has me wondering if kind of a hybrid solution could work, like a 3D printer that can also pick and place components mid-print. That could be a reliable way
by zeta0134 8y ago
That has me wondering if kind of a hybrid solution could work, like a 3D printer that can also pick and place components mid-print. That could be a reliable way to deal with the permanent magnets, since presumably there isn't going to be a way to print out any material that would magnetize itself reliably.
- mrfusion 8y agoI think there’s a way to make motors without permanent magnets
- petermcneeley 8y agoIndeed. An electromagnet is a magnet! However usually these are quite weak even with iron cores.
- jacquesm 8y agoQuite weak? Electromagnets can be as powerful as you want in a given space provided you can cool them and you can avoid saturating the core.
- petermcneeley 8y agoI more mean in reference to using them as an opposing magnetic field for using in an electric motor. Like suppose he simply put two PCB electromagnets together. What would you expect the force to be?
- jacquesm 8y agoI'm sorry I read your comment as a general statement on electromagnets. Yes, two PCB based electromagnets are not going to be able to make a very dense magnetic field. The major reason is that the current carrying capacity and cooling will be lousy. But a sizeable electromagnet made from a copper coil and a half decent core material will happily lift your car.
- jarfil 8y agoThere is a solution for "printing" magnetic domains in a base magnet, maybe a printable material could be devised such that later on a "magnet writing head" could create whatever magnets are needed. https://youtu.be/drD416THU7Y https://youtu.be/drD416THU7Y
- icebraining 8y agoPeople are working on such an hybrid: https://hackaday.io/project/963-firepick-delta-the-open-source-microfactory https://hackaday.io/project/963-firepick-delta-the-open-sour... (the project seems dormant, though)
- asteli 8y agoThe tech has existed for a while to embed components inside PCBs --- inserting them into voids during the lamination process. Small discretes (capacitors, resistors etc) up to full magnetics are being embedded in production. Example of an embedded magnetic in a board-mount DC-DC converter-- https://twitter.com/hubmartin/status/906768773180530689 https://twitter.com/hubmartin/status/906768773180530689