There are different forms of Metal Clay available
Lump
The most popular form because from here you can make sheet, wire, paste and volumetric forms.

 

Slip
This material is specially formulated to allow it to be pressed through a nozzle. If you have ever decorated a cake you can master PMC Slip. Sold loaded into a disposable syringe.

 

Paste 
A thick slurry that is used to fill joints, adhere parts and create luscious frosting-like surfaces.

 

Paper
Mitsubishi developed this for the Japanese art of origami, but American artists have found this thin leathery sheet useful for weaving, braiding and to create drapery effects.

 

Sheet
Thicker version of the paper, excellent for rings, backing plates, medallions and more.