nov 06, 2012 diy hammer mill information, videos, pictures and news. hammermill home made i have made this machine to mulch leaves for pellet making and/or composting. i have been mulching most biomass materials including paper. more detailed,hammer mill hammer pulverizer all industrial,the hammer mill has a strong, thick-walled drum. as product is fed into the machine, hammers mounted on a rotor spin within at high speed, grinding and crushing it against a sieve to produce particles of a desired size. applications. the hammer mill is used primarily in industrial settings. it can provide a reduction ratio of as much as 201.