Royalties - you complete a declaration in the spring same as other corpsWhy do you drill so heavy? Still aiming to drill 2kg fss here onto ploughed light ground.
Also how and when does one pay the royalties?
Maybe about £5 of scrap to build ours ... at a push and 2hrs in the workshop a couple of years agoCleaning still costs time & materials if you make a DIY aspirator
Cleaning is if you’ve got the time and inclination. Micro feed rollers don’t like pods and chaff - fine for you with a cereal drill and high seed rate. You could also screen or aspirate out the smaller seeds for the “better” bigger ones.You don’t need to clean it.