I built my own worm farm, after moving here from NZ and giving that one away.It involves only using recyced materials and very simple and inexpensive or free to make at home.
i used 2 x10 lts food service tubs with lids( the kind u use for yoghurt or mayonnaise). The two tubs sit on top of each other , and lids for both have holes, the top on for the worms to breathe and the bottom ones for the worm peee/ juice to trickle through.
The base of the top tub should have large-ish holes too, which i made with a knife, but could be done with a mteal pipe, whcih was heated up.
to set it up is a cinch, u need some ld newspapers in top tub at the base, and some compost with worm eggs inside./ or someone wh can give you some, theres no need to buy these.
then you feed the worm farm with vegetable scraps, egg shells, newspapers , no meat, dairy , bones , onions or citrus.
The bttom tub can be diluted with water nd the liquid is a natural fertilizer.
