Just to let you know of a small scale sausage stuffer i've made. Works quite well and only cost �2.00!
Firstly get a mastic gun (�1.00 from pound shop).
Secondly get a cartridge of acrylic sealant, or no-nails (�1.00 from same shop).
Next evacuate contents of cartridge using mastic gun, now push the plunger part of the cartridge back out of the cartridge using a long drill bit pushed through the nozzle of the cartridge.
Remove any remaining sealant using a damp cloth. Now wash the cartridge & plunger well using plenty of hot soapy water.
Fill the cartridge with your sausage mix, place the plunger in the end, put in mastic gun, place casing on nozzle, start pumping on trigger and away you go.
Refill by removing plunger as above. Clean well after use. Works particularly well with small diameter casings.