Coal ball machine is one typical type of homemade briquette presses. At present, people under 15 have no idea about the manual coal ball machine. In their opinion, it is pretty easy to get large amount coal balls. Actually, when I was a child, by the way, I am 22 years old now, it took my mom lot of times and efforts to make coal balls, especially we had to store them in advance in winter. You know, it needed a long time to get the dry coal balls. Recently, there is electric and automatic coal ball machine, which is time saving and cost effective.
Nowadays, it is possible for you to buy coal balls in bulk and you do not have to make them in summer and autumn in order to you have enough time to make enough coal balls to spend the whole cold winter. Homemade briquette pres is a rising industry and many people have made great fortune from it. So it is not a bad idea for you to try, and it won't cost you much.