I am surprised we have not had a dedicated thread to these items. I know a few people have inquired about them in the past. Some here use them to store ammo and others use them for storing meat. Some just to prevent freezer burn when a thin bag tears . Others to really get that extra life out of the meat.
I have just ventured into the process with a cheap machine from China on the way courtesy of Ali express.
I will post up a Review the machine and quality of process. Please anyone that uses a unit post some info on them as I am sure that if I have an interest others will have too.