Oh, gee.........how can I explain how we do this and have it be clearer than mud????
First off, you have to know when to quit putting feed in. LOL He usually needs about 3 1/2 folds of bag left on the machine to have enough to close it off. Then pull ahead till the bag comes off. Hopefully, *IF* you have not put too much in, there is a few feet of bag on the bottom that has no feed. If it does, you get the shovel and shovel the excess back up into the bag. Then take the bottom, fold it up, then bring the top down over and tuck it up underneath the bottom. He then takes a tractor bucketful of dirt and puts over the end to seal it. Sorta like an envelope???? Do you get the picture?? LOL You also have to cut a vent hole to let the gas escape till the fermentation is complete; usually 2 or 3 weeks. He makes it about 6 inches long-kinda moves some of the dirt away so when he tapes it shut he can push some of the dirt over the tape too.