Author Topic: Rust on a painted frame (Read 5556 times)

Dredgy73 · « **on:** February 16, 2021, 09:21 PM »

Hi all

What is the best way to remove rust on a painted frame?

I would like to keep it original so do not want to harm the decals....

Coke? Cif of something else?

Thanks

Midschoolfool · « **Reply #1 on:** February 17, 2021, 02:12 PM »

Neither.

You want to use CAP (Citric Acid Powder) or OA (Oxalic Acid)

https://www.amazon.co.uk/Citric-Acid-1kg-100-Grade/dp/B00DJI8RA0/ref=sr_1_6?crid=2TD8NNAIWCGUX&dchild=1&keywords=citric+acid+powder&qid=1613571112&sprefix=citric+acid+pow%2Caps%2C160&sr=8-6

Put the parts in a tub, put that in with water. Plenty of tutorials on the net.

Dredgy73 · « **Reply #2 on:** February 18, 2021, 08:59 AM »

Thank you 👍

CustardLips · « **Reply #3 on:** February 18, 2021, 01:57 PM »

Citric acid bath how to guide...

http://www.radbmx.co.uk/forum/index.php/topic,178383.0.html

wildon · « **Reply #4 on:** February 18, 2021, 02:33 PM »

Oxalic Acid works
[ Attachment: You are not allowed to view attachments ]

Dredgy73 · « **Reply #5 on:** February 24, 2021, 06:18 PM »

How long do you leave it in the bath for. Added more crystals, but after a day not much is going on!

BMX1973 · « **Reply #6 on:** February 28, 2021, 02:23 PM »

I normally put in 1/2 - 1 kg and leave for a day. Wipe over every now and again if you can. You will see it working as the rust spots normally turn yellow.