Why?

Why can´t i just, let the capacitor connected to the power supply and switch the output?

if the capacitor gets fully loaded, it´ll stop getting current from the transformer.

I didn’t understand why if i switch the output and not the input will blow the rectifiers or the bridge.

Thanks.

I agree with many of you: We have no right to demand any action from any author, hacker or inventor not in our employ.

However, we have every right to criticize even the most worthy of men (identifiably or anonymously) – and the most interesting thing about criticism is this:

A worthy man will always respond not to the criticizer, but to the criticism itself.

I would submit that podecoet is therefore a worthy man. He reprinted my post, but rather than attack me, he documented his project! *

PS-
> Does anyone know if putting an inch
> or two of a fluid on top of the plate
> you’re cutting would get rid of
> sparking and make cleaner cuts?

Yes, but there are additional issues from doing this – it isn’t very clean and you have to circulate the fluid.

In his first video, he was using it as a free form cutting tool to cut shapes out of sheet materials by hand – and I’ve never seen anyone do this before. It’s an interesting idea for sculpting.

I’m playing with an XYZ gantry to do something similar to this (it’s a CNC mill, basically) and the cool thing about EDM is that you can cut very fine shapes and drill holes that you can’t really do easily with end mills.

A lot of people use lasers, but lasers have their own issues – EDM can cut reflective materials and has some advantage. You can blow inert gases over the working discharge with good results – you get less burning of the material.

There isn’t a big call for it, but my problem is to make a bunch of parts out of thin reflective metal stock. For me, an EDM flatbed plotter is the perfect solution, mostly because I can’t economically use big laser cutters on such tiny one-off items (usually under 2″ in diameter).

PS – despise me if you will, but I would have reacted in the same way to such a comment, which is why I worded it as I did. Really creative people ALWAYS have egos to match – it goes with the territory. They’ll often deny it, but empirical data shows otherwise.

Again, to podecoet: Sorry for my technique, but I just wanted to grind a specific axe. BTW, good luck with your business ventures!

To people complaining about other people’s complaints : there were only 2 or 3 negative comments in the other thread, why focus on these ? You can’t have 100% approval every time.

Props to those who actually step away from the internet to build something in real life!

I did a little reading about electric discharge machining. I’ve seen some reference to using a fluid (like Kerosene) to prevent oxidation. I imagine this would also help get rid of the sparks. Does anyone know if putting an inch or two of a fluid on top of the plate you’re cutting would get rid of sparking and make cleaner cuts?

I have an artist friend who could probably create some really amazing things with a tool like this.

All-in-all, an awesome write-up, and a pretty slick piece of gear. But as smart as I am, I would be hard-pressed to figure out how to make my own from the information presented. A little more detail on the workings of the hardware would be greatly appreciated.

Also, his write-up on the flashlight mod was hilarious. Especially the disclaimers.

It really is a shame that some people who will remain nameless *cough*egotastical*cough* could make the rest of us look like jerkoffs.