I think Most will agree it's the fine dust that's the bad stuff ,So ,I ran some tests to illustrate ,the point ,and be able to see ,What you can not see usually ,And do so in a manner effectively,to be able to see ,(the invisible) . Granted neither of will ever be these items is or will be normal fodder for a scrollsaw ,and only cut for proof of filter effectiveness and whether changes to you system are needed. The TEST - is very easy & FAST , I used a 5"x5" scrap of 1/2" sheet rock taped the border sealing against edge crumbles etc. so actual cutting of saw leaves or makes dust on the saw table . Now set your saw up the way you normally use it and start sawing making a zig zag pattern thru the piece , Being the dust is white you will be able to see a stark contrast to and other dust shut down as usual ,wait 5 minutes for the air borne dust still floating to settle . This should dramatically give proof you could not see ,The small size ,should not have any effect on any of you using vac's , other then show you how much is passing thru back into the air and you will be able to see it's effect also.
Good Luck ,But I am afraid at least some of you will wanting to make some changes ,some will mock at the use of sheet rock ,This 2 minute test raises the DUST level Dramatic-ly to illustrate the point few can see what they Breath in hours of Scrolling ,a few will scoff ,a few will laff ,But all will
wonder ,to some degree especially those who cut toxic wood ,plywood w/ glues and MBF just for starters .
I would ask Those of you ,who Do the test ,and scare hell out of them selves ,and those who have a better way to reply ! They are your Lungs ,Now I HAVE COPD ,(which NO_BODY in their right wants )That DUST Has been a Thing I had to fix or give up Scrolling all together ,So I pass this along to you while you have no issues , Get a large vac and put a sheet rock dust collector bag in it to stop the Ultra fine dust from re-entering the room and protecting the bearings of the vac.s Motor ,and the mess you can't SEE ! Carl