Circuits to reuse washing machine motors to drive workshop tools

[Christophe Mineau]

Hi, thanks a lot for that very clear video, this is really valuable stuff, and I think you are one of the first across the World Wide Web to fully document and explain the close loop circuit.
Driving a washing machine motor is one of the most massive technical meme and one could read hundreds of forum pages dealing with this question, (and I have read many of them).
There are only a few solutions that can be workable with universal motors, and most of the time, the proposed solutions keep open loop and cannot offer a proper regulated speed control. For closed loop solution, the principle is often explained, but no practical solution is ever showed, except this guy, you probably visited his page, who makes home brewery, and started an equivalent project, but I don't think his page is as well documented and explained as yours.
Just to mention that there is also an alternative using a tda1085 circuit, there is a Russian guy selling the PCB on eBay, even a wired version, but it's not as easy and maybe there is a parametering issue as you mentioned at the end.

So , congratulations and many thanks for this so valuable post ! And keep posting!
Cheers,
Christophe