[quackerhacker]

> "I’ve been able to almost double it by adding a ferrite sheet to the back side of the stator coils to contain the coils’ magnetic field lines."

I never heard of a ferrite sheet, completely awesome! I liked the article, but IMO the title is a little misleading. What I gathered is that he 3d printed the rotor only. I'm assuming the actual 4 layer pcb was etched. The rotor was still wound manually. The hall sensor still soldered by hand.

The print notion implies production automation, which is my only gripe. His hackaday has a more accurate title "PCB Motor".

[zan2434]

doesn't PCB stand for "Printed Circuit Board"? So it's still mostly printed.. The rotor is 3d printed, and the stator is manufactured via PCB techniques. I understand what you mean regarding it not being totally printed though.

[TaylorAlexander]

While “PCB” does mean “Printed Circuit Board”, it’s kind of a misnomer. The word “printed” doesn’t really accurately describe the process used to make PCBs.

[jdietrich]

They're standard printing techniques, just not "squirt something out of a nozzle" printing. With the exception of drilling and through-hole plating, the processes used in PCB manufacture would be entirely familiar to any experienced printer.

[slededit]

Lithography is a printing process. Machines that make single copies without plates or masks is a newer use of the word.

[metaphor]

Depends what type of PCB[1] we're talking about.

[1] https://www.nano-di.com/dragonfly-2020-pro

[IshKebab]

You can automatically solder the sensor, and I don't know what you mean about winding the rotor. All you have to do is snap some magnets into it.

It's completely automatable, but then so is a normal motor. This isn't about automation.

However I agree that the title is misleading. The 3D printing is by far the least interesting thing about this motor.