How do you remove rust?

[Mach_Cat]

I was just loaned some ideal molds, (long term loan) to use.
They have some light rust in the cavities. what is the correct way to clean these up?
These are 4 cavity molds.

Thanks Ed

[Dusty Bannister]

http://castboolits.gunloads.com/showthread.php?185774-how-do-you-remove-rust-from-bullet-molds&highlight=remove+rust+molds

[M-Tecs]

I highly recommend Evapo-Rust. http://www.evapo-rust.com/product-info/

http://castboolits.gunloads.com/showthread.php?190788-look-what-I-dug-up/page2&highlight=evapo+rust

http://castboolits.gunloads.com/showthread.php?234438-Ugh-Rust-Mold&highlight=Evapo-Rust

http://castboolits.gunloads.com/showthread.php?213419-How-to-KILL-Rust&highlight=Evapo-Rust

http://castboolits.gunloads.com/showthread.php?195107-rusty-molds&highlight=Evapo-Rust

[yondering]

I've had good results with diluted CLR in an ultrasonic cleaner.

Be aware that any rust remover will remove bluing as well.

[Daddyfixit]

Might give this a try.
http://schoepp.hylands.net/electrolyticrust.html

[zuke]

Each half in Stainless media for 7 hour's.

http://i807.photobucket.com/albums/yy356/zuke_bucket/DSCF2697_zps11f9a29d.jpg

http://i807.photobucket.com/albums/yy356/zuke_bucket/DSCF2696_zps3a3e643e.jpg

[Stephen Cohen]

I have left metal objects to soak in water and molasses, Gall of water to half a cup of molasses should do it. Don't forget to soak metal in water and bi carb soda after rinsing off molasses this kills the acids then dry and oil

[rollmyown]

If you try the molasses method check often. Things can get very bad if left too long.

[Stephen Cohen]

If you try the molasses method check often. Things can get very bad if left too long.

I was told that as well, but I have cleaned so many old war relics that were dug up and as yet have had no problems, but I do as you say and check often.