No more sandaper - use electricity to polish metals. Electropolishing: how to use and therory 

Thanks. The results also depend on on the way the part is connected to the power source, its geometry and many more

@@is_it_science it is very hard for me to get good results. I achieve more a matt finish, not shiny. I only have 12v supply 7.5 A and 5V with 1, 2 or 3 A. I think it depends a lot of the size from the workpiece. I have better results putting like eight rings on one go and not just one.

Likely but you need some experimentaion

@@is_it_science I'm willing to try it. Thank you!

Eeeh. You are welcome to send me your pieces ... for a trial. You know, they could get dissolved... If serious, the same method shall work ok. Yet, beware that idem geometry could make polishing non-uniform.

@@is_it_science ;-) ;-) ;-)

The fumes are mostly electrolysis products - hydrogen and oxygen. Plus some dropets of sweet-sweet concentrated acid drifting with them...

Somewhat. In my experience, sizing and positioning may be important but margins for errors are huge. Just give it a try.

You can buy it - it just need a bit of hassle and paperwork. It is not hard at all. Regarding the alternatives, please read the review in the video description. I haven't tried these though...

Nope - it does need a lot of current. You may get away with less, but current is high

can i use citric acid as pshopirc acid substitute?

@@dogodogo5891did you find out?

i am also interested how often you would need to replace the solution in a small production environment (making ss bicycle racks)

@@muzzarobbo Can I guess that you ended up just getting an abrasive vibration tumbler?

Thanks. How should I have done it better - what is missing?

@@is_it_science Думаю большинству не русскоговорящих помогли бы субтитры. А так видос очень полезный, спасибо.

@@is_it_science Nothing is missing, sometimes you speak too low, that some words are far too silent, that one has to stop, raise the volume, go back and listen again, but else, you´re perfectly understandable, despite your english not being perfect. Your video is very structured, but not structured enough for a beginner like me. Some hints in the timeline, suggesting that the next chapter begins, and naming the chapters of the video (in the timeline and the video itself, with some name-card appearing), would make it even better...

No - KOH for stailness would not work. H2SO4 would not dissolve it either. And it you had something soluble, that would not polish it - only dissolve and make as rough as it was.

@@is_it_science what? Fe + H2SO4 -> H2 + FeSO4, and KOH will nicely etch stuff away, where do you get your knowledge?

@@is_it_science I think you are biased to your method judgement

@@Jkauppa I most definitely biassed. Yet, there are some matters I claim some knowledge about...

@@is_it_science dont claim, I dont acknowledge it