Greetings! Here I will show you my homemade winnower. I found the idea of this thing on an European forum and I built it myself, it works great!
All you need to do is pour the seed mix into the funnel while your vacuum cleaner is plugged into the side pipe of the winnower. The idea is that the husks are much lighter than the seeds are, so if you use the right amount of vacuum, only the husks will be taken and the seeds will fall down the pipe, into a recipient.
What you need is:
-a length of PVC pipe
-a PVC "T" shaped connector
-a PVC connector which has the same inside diameter as your vacuum cleaner nuzzle.
-a bit of steel strapping
-a bit of twine
Your hardware store will probably offer you many different pipe sizes, I am pretty sure you can get it to work with all of them. I used small ones, with an inside diameter of about 1 inch and half. The important part is the connector size for your vacuum nuzzle
. Make sure you measure the outside diameter of the vacuum nuzzle you intend to use, it has to fit inside the side connector.
Once you have found the correct connector, you can easily try and fit all the other parts based on the connector. Normally PVC pipes are joined using PVC glue but I found it is not needed for the kind of thing.
I used a hand saw to cut the pipe but I expect you can do this with a steak knife as well. I secured the thing using the steel strapping and a few wood screws. The twine is used to secure the funnel. You will need a drill for the next part tho.
Once you've got the parts all fitted and secured on a board, wall or whatever surface you go for, you need to drill holes on the side pipe to allow air to flow. The idea is to lower your vacuum cleaner's power, the more holes in the pipe, the less vacuum will be applied to the funnel. No vacuum cleaner is the same so I cant tell you how many holes need to be drilled. What I did is simply let drop a single seed down the funnel while the cleaner was turned on and inserted in the pipe: if the seed reaches the recipient then you are good, if it gets sucked by the cleaner, drill another hole. You can be sure that the husks will be sucked much easier than the whole seeds.
The whole thing is pretty cheap to build, under 20$. I use it all the time its bliss