Heavy Metal. Rust Removal and plating

The Citric Acid is a garden supply item so try old style garden places or farm supply stores. I don't know if it comes in different strengths.
The parts were in the bath for about 30mins at 45 degrees C . The bath heats up from the ultrasonic energy as well as the heater element.
A wire brush is good for the stubborn rust spots or more time in the acid.
 
The Citric Acid is a garden supply item so try old style garden places or farm supply stores. I don't know if it comes in different strengths.
The parts were in the bath for about 30mins at 45 degrees C . The bath heats up from the ultrasonic energy as well as the heater element.
A wire brush is good for the stubborn rust spots or more time in the acid.
Thx. I’ll order from Amazon for convenience.
 
I have a lot of plating to do. In the past I have bead blasted the parts and this is tedious. Today I thought I would try using citric acid.
I mixed a solution of 40mg of citric acid to 1 L of water. I put this in a glass jar and put in some pretty rusty small parts. I then put the jar in a ultrasonic bath with water in the bath to transfer the energy, he bath also warms the solution.
I was stunned at the results only the very worst parts will be bead blasted from now on.
Taking a punt I also bought some Caswell brightner ( their new formula) to try, as polishing the parts post plating is time consuming. I have a home brew solution in my bath and the new solution did not work like the old stuff did.
I think it is helping the parts only need a light rub with 0000 steel wool to come up shiny.
I have a couple of sets of spokes and nipples plus a whole bike load of fastners to do so you can see why I want to streamline things.
I don’t have a scale to measure 40mg. Approx how many tablespoons would that be?
 
It wasn't very scientific, I admit, but I did experiment with several different methods of rust removal. That would include electrolysis, Metal Rescue, and a couple of different acids. I will admit that I didn't find one method universally best. My own conclusion is that I prefer to use phosphoric acid more often than not. It's cheap and easy to find at the hardware or big box home improvement stores. I did a thread on it a while back.
 
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I too have tried just about every method there is for rust removal. I do 99% of my rust removal with a bench mounted wire wheel, like the pic, but with a long arbor for better accessibility.
 
I don’t have a scale to measure 40mg. Approx how many tablespoons would that be?
A heaped teaspoon is normally about 5grams*, so about 8 of those.
Trouble is, teaspoons, tablespoons, etc have differing capacities all over the civilised world.

*grams, not milligrams - mg is milligrams, and you aren't going to get much rust removal action with 40mg of stuff.
 
A heaped teaspoon is normally about 5grams*, so about 8 of those.
Trouble is, teaspoons, tablespoons, etc have differing capacities all over the civilised world.

*grams, not milligrams - mg is milligrams, and you aren't going to get much rust removal action with 40mg of stuff.
Ok thanks. I thought 40 mg didn’t sound like much. I think I can measure 40 gms on our kitchen scale.
 
Sorry for the confusion my mistake you are correct it is grams. I deal with mg and ml every day at work and didn't even notice the error. I will edit the origional post.
 
Tried it, liked it and by mistake left a partially rusty part in the bath overnight (cold, not plugged in) and to my surprise came out squeaky clean!
 
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