Dechroming by electolysis 

Simple Sodium chloride (table salt), 60 grams per liter at about 12v, the minus on the piece where you want to remove chromium.

Tercian is correct, unlike the video, although effective it was not the best way to do it.

I just googled it and followed other folk's recommendations. Worked pretty good.

@@yoratoni_depreciated What's the other piece made of?

@@franksgarage8551 so what's the way?

From personal experience and researches I would say - YES. But you MUST use chromium anode. It will push chromium ions towards cathode. And you MUST find appropriate voltage and current values based on chromium elektronegativity and size of item plated & etc. Which MUST be used bit lower to prevent decomposition of anode. If not mistaken usually it will be couple hundred miliamps and low voltage. Because high voltage breaking salt and you getting chlorine gas which is DEATH HAZARD. To big current making plating brittle and not faster plating process. But is good for deplating mettals if used with Graphite, Lead, Platinum anode elektrode. Same principle is for removing some other metals like Cu, Ag, Au, Ni from solutions. You using that metal anode (positive +) which wanna remove or plate. Afcourse plating times, quality and final results very depends on electrolitic solution used. Tip to remember about electrolysis: + Anode ADDing into solution towards - - Cathote CATCHing from solution ions or stripping anode elektrones (depleting it). You add what wanna catch. 😉

I did this but am having trouble with plating

We actually didn't take chance with it and disposed of the residual solution in through hazardous waste.

@@CalypsoDogs At 4:43, the lady started handling it with her bare hands. I would have advised her using gloves.

The cathode was bronze and the solution is distilled water with added salt.

Sounded like a salt water bath and a 10A current. 10A is actually fairly "fast" for electroplate work, rule of thumb for DIY is around 1A.

Correct

Lot's more control from our welding machine than a battery charger.

The anode (-) was the piece we were dechroming.

@@CalypsoDogs I thought anode is (+)

It's bronze

@@CalypsoDogs thank you for your response another question is what kinda metal was that piece you stripped? Looks a bit like cast or pot steel.

They are chromed bronze hinges. Once dechromed, they still needed some cleaning.

It's bronze

@@CalypsoDogs thanks! but can I do copper bar though?

I can't recall exactly what settings. We just googled this and gave it a try. We started about as low as our welding machine could go.

@@CalypsoDogs @2:00 he says he's at the lowest setting of 10 amps. Would have to be on DC setting. I have never seen anyone use a welding machine for electrolysis. Usually folks use a battery charger. The idea of having my welding machine operating around water scares the Heck out of me.

@@jeffbecker8716 Not much difference between the machine we were using and a battery charger. Sure a cheap welder with a high OCV would be a bit iffy. Keep in mind underwater welding happens all the time.

I don't think it matters as we aren't plating

Electricity