I found this how to build an extractor video on youtube and followed it today. 1.5hrs later i have a working extractor powered by my variable speed powerdrill and an hour later had 8 ideal frames extracted.
Little bit fiddly, but not enough to make we wanna go from my $80 DIY extractor to a $600 store bought job (Cheapest available around here).
Hope some one else finds it useful. I will post a few of my own pics from today, tomorrow
Everything is as straight forward and easy as the vid shows, only, make sure your tub/bin is min 600mm deep, 700mm would be perfect.