For different effects and gradations, sprinkle the powder onto the damp paste. Powertex Rusty Powder is easy to use and can be combined with other media.
To use Powertex Rusty Powder:
Pour some Powertex (preferably ivory or light tones) into a bowl and add Rusty Powder (10 - 25%).
The more powder used, the darker the result.
Spray a mixture of water and up to 50% vinegar into the mixture.
Can also be sprayed several times on the desired object to increase the rust effect.
Leave to dry for 24 hours.
Price per pot.