I've never understood why anyone would try to engineer a work around for a $10 part. It's really simple fellas, soak your filter every 10 roast cycles in a dilute TSP/warm water solution for 10 minutes (I like and use Joe Glo, sometimes Full Circle), carefully rinse under lightly running water, set aside to dry
Not trying to sound ornery here but if you can't afford to replace a $10 filter on an $800 roaster, perhaps you would be better served using another roaster
Best,
Jake
Reddick Fla.
I may not agree with what you say...
but if you say it with fewer words I'll try harder...