1/8" BB holds up quite well- use a minimal clearance insert or tape a business card over the blade hole if the blade hole is large in your table(most are). I usually stack cut at least two- gives each other a little added support. You will probably have to slow your feed rate down if you are used to cutting 1/2" because a sharp blade will cut thru the 1/8" a lot faster than you are used to.
Although it looks rather flimsy- it is quite tough.
Tom