I, like livertrans (Tony) above, sealed up our Craftsman tablesaw with cardboard panels about 35 years or so ago.
It was my job to clean the shop and danged if I didn't get sick and tired of sawdust all over everything. That "improvement" worked great. Adding a shopvac to the bottom a bit later on also helped. We, my dad and I, were building houses at the time so there was tons of sawdust made every week.
Then even later on I sealed ALL openings around the underneath edges of the table with foam spray insulation (this stuff was not on the market earlier)... that made a vast difference all around. The tilt adjustment handle slot was 'fixed' with duct tape - really amazing stuff that duct tape!
My job suddenly was being done for me - as long as my dad remembered to turn on the vacuum cleaner when using the saw. That tablesaw is now retired to a nice clean, somewhat dust free basement and everything is still sealed up rather tight. :biggrin: