I have the Blendtec (formerly called K-Tec) Grain Mill. I have been using it for nearly 3 years now. In warm weather the mill grinds wheat very quickly and I can mill a week's worth of wheat without any problems.
During the winter however, I am having difficulties. The mill gets so warm while milling the grain that it causes humidity. The humidity is built up in the mill causing the flour to cake up on the underside of the the top (the actual mill portion) and also in the air flow areas. If you look at the picture, on the right hand side of the mill there is a small air flow outlet that has a sponge-type piece stuck into it to prevent any flour from blowing out the vent. That area gets very gummed up with flour each time I mill during cold months.
This problem is a real hinderance to my baking & cooking. We do not use white flour. Instead, I mill whole wheat flour. It is much healthier and also losts less than buying an equal quantity of wheat flour. So, now I am wondering how to solve this problem at least for the rest of this winter. We heat with wood, so the house is rarely as warm as a home with central heating would be. I have tried milling in both a cooler area and a warm area of the home with the same results. I can only mill about 6 cups of grain before having to thoroughly clean out the mill, letting it completely air out for a few hours to evaporate any moisture inside the mill, then mill another 6 cups of grain. A tasks that only takes 30 minutes at the most during the summer now takes all day.
If anyone has experience with such a problem and has found a way to help lessen it, I would love to hear from you. I am hoping to save up enough before fall to get a non-electric grain mill to use as we are going to be going non-electric. It will require me to mill wheat as I need it instead of milling a week's worth at one time, but that is fine. For now, I am just trying to find a way to get through the rest of winter with this mill not giving me such a problem.