Thanks much on all the information and the links to your other descriptions and pictures of your fleshing tube, wheel, and knife, and the tumbler. That helps immensely. If you were not "tubing" the animals, would you still use a round PVC for this? I am thinking not, but... And the tumbler is basically a dryer with no heat or forced airflow right?
Now that it is September and moving into winter, (fall doesn't last long around here is 37 degrees right now) it is recommended that the "tanning" area be at a certain temperature for the processes to work?
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