Get crafting to 400 craft the item for your class that is unique, then drop the skill

[alzika]

Basically, let me use Cybertech as an example. You can craft 4 epic grenades. The exploit here, however, lies in the fact that it does NOT require cybertech to be used.

So, you could make all of the Cybertech grenades, then take Biochem. and get the medkit that is not consumed.

[xerexlord]

This is being changed in patch 1.1. You will be unable to do this once the patch drops. They will require the crew skills to use.

[suineg]

This is all changing in 1.1 except for the Rakata armor items.

Not an exploit and soon to be not possible.

I have levelled Biochem to 400, dropped it, picked up armortech, crafted the 400 bracers/belts, dropped it, and picked biochem back up to 400 just in preparation for 1.1 to come.