If the humidity controlled curing exercise is not as good as you hoped for perhaps this idea might and it is cheap ..very cheap .
I used a 301 litre blue food grade barrel to make my dryer. Carefully used a jigsaw in a drilled hole to cut out the bung end.... keeping well inside the 1" lip I'd drawn in the top bung face ( you need this for access & something to screw a base on later )
Then drew the positions for a 10 mm hole every 6 inches or so around the diameter
Drew a vertical line ,then drew a decent sized door on it. Used the jigsaw in a drilled hole to cut only the hinge side of the door . ( angle grinders are dangerous for this as they tend to grab in the molten plastic).
Then pop riveted on stainless steel piano type hinge through the drum side on to a pre made backing plate , made the hasp side cut and fitted the hasp and staple... again on a pre made backing plate . Finally cut the door top & bottom .. doing it this way means the door is a darn good fit and is hung correctly before it is severed free of the barrel .
I then cut a disc of 3 mm thick aluminium so it fitted the cut open end of the barrel and having worked it out using pi x d that I could put in a small self tapper every three inches so it held in the one inch lip I mentioned earlier.
I then ground a 10 mm twist drill so it had a much smaller 1/8 th stepped point and used it to drill all 90 or so of the 10 mm vent holes in the barrel's body .
Inverted the barrel ,set it on a castor'd trolly , laid 12 clean concrete block paviours in the base to hold it down in winds etc. on top of the aluminium insert and fitted a pair of hanging bars right through the barrel at 90 degree to each other each bar with screwed on end stops to prevent them coming out .( one bar is higher than the other so it slid through easily ) I purchase 10 stainless steel butchers hooks from Wischenfelders to hang the sausages etc from and these hook over the bars .
I ran up a nylon net curtain material to make a big fly screen sleeve so it fits over the barrel to keep out flies and also put some 1/2 " chicken wire that has the ends clamped between two laths at each end , so I can wrap this round the barrel & fly screen to keep the dog , foxes, badgers , two legged nosy Kids and rats etc out.
I works well ,too well ...judging by the high weight losses of the salami inside it .
Due to it being on castors I can move it around when it's fully loaded or in the way .