I cut a lot of small parts in my segmented bowl making. Lots of these cuts are made at blade angles other than 0 degrees. Operating with a zero clearance insert is desirable but the variety of blade angles makes using one difficult. I would need a bunch. I use a lot of packing tape to hold small parts while gluing and the other day it occurred to me to stretch a thickness or two of the tape over the blade slot with the blade down and then lift the blade to cut through the tape and leave it as a zero clearance overlay. The tape is strong, not very thick and the idea works very well. I am in the midst of cutting a number of small wedge shaped pieces about one-eighth of an inch max and haven’t lost a one down the blade slot.
Replacing the tape is quick and cheap, but the tape seems to be tough enough to last for a long time. The tape I am using is about 2” wide and I would not reccomend using a narrower tape. It needs to span the entire slot, and should be long enough to go both in front of the slot and behind it for close to the full width of the table.
-- Bill Roberts -- Steal one idea it's called plagerism. Steal a bunch - it's called research