I am unsure about crafting. However you can purchase them from dragon merchants, if you find a door on a planet leading to a Transdimmensional Rift, If you go right to the building after going though the rift outside, you'll come to an underground cave, a vendor will be there selling 'legal goods' will sell em too you. Hope it helps.

To add to this post: You need the Spike Ball Tech to continue rolling past the Draconis outpost mentioned above (Yeah down the rightmost side and underneath). Eventually you will come accross a tunnel underneath the outpost which leads to the 'Legal goods' shop! Nearly lost my mind in searching for the right answer!