I now have a new version of my dehydrator, check it out https://www.thingiverse.com/thing:2648645
I admired Tinkerman's Dryer, but wanted to make a couple of tweaks. I am loving this filament dispenser; been using it to dry my nylon, while printing!
In Tinkerman's comments section, dtrArch recommended this dehydrator: https://www.amazon.com/Flexzion-Dehydrator-Food-Fruit-Dehydration/dp/B01J51JLCC/ref=sr_1_23?s=kitchen&ie=UTF8&qid=1499306986&sr=1-23&keywords=dehydrator+machine
and Wilton's cake caddy, which I got from Joann http://www.joann.com/cake-caddy/5717806.html#q=cake%2Bcaddy&start=1, for about $10 (don't forget to use your coupons!)
While I found that the caddy top would fit perfectly on the dehydrator by itself, the shelf units were just a bit too large. I figured that I could do without the shelves if I could just hold down the spool holder, using the screw holes found in the center of the dehydrator. Added a couple of holes for the screws, longer screws, and Voila! an immobile spool holder.
I also wanted the Filament Snoot to receive my PC4-M6 Male Straight Pneumatic Connector (I hadn't built Tinkerman's version, so I don't know if it's any better or worse, but I'm more confident about its security and air-tight seal).
I built a cap to put over the snoot, but I never use it...it may be useful if someone decides to design for a second tier and have 2 snoots.
I had thrown in about a cup of desiccant beads to keep it dry while it's off, careful not to let any fall into the holes under the spool holder where the heat comes out.
Printed the snoot .1, without supports. The threads printed a little warped without supports, but it still worked for me.
Used 2 #4 x 5/8" pan head screws, #6 works too.
Concerned about the heat, instead of using foam for a gasket between the caddy and snoot, I folded up some parchment paper and cut a hole for the filament. In hindsight a gasket isn't necessary, a little airflow is okay, good for when the dehydrator is on. The dessicant helps keep the humidity down when it's off.