It is just a lvl2 compressor remember in the old IC days how it took SO longjust to compress something????? Well once you turn the thumper on it will compress faster and faster until it reaches %100, but if you dont give it a steady supply of energy, the thumper will just compress stuff at the normal speed
Recpies
Compressor = C
Refined iron = I
Advance Machine = M
Advance Alloy = -
I - I
I C I
I M I