How to clean alluminum blocks used with alloy?

Hello,

How do you guys clean the aluminum blocks when full of polish? any chemicals to remove polish from the blocks?

thank you

The old fashioned way. With a brash brush. Just make sure to wear at least a dust mask, if not a respirator, and some goggles.

Thanks for your reply, that would be very time consuming, have you tried using any chemicals? or any machine out there automated?