SWMBO finally let me have my Unisaw (30" Biesemeyer, left-tilt, WAHOO!) When I got it unpacked, main table was out .027". Ouch. Delta promtly sent me another. Only .005" out in a single place, but otherwise ok. When I attached the extention table to the left, it sagged--almost .030"--no matter how I tried to tweek it. Didn't want to send it all back again, so I shimmed between the main and extension tables.
Here's the quandry: I didn't want to cut up a feeler gage to shim, so I used a doubled piece of kitchen foil. Sag solved. The entire table is as flat as my singing. But is aluminum foil ok? Am I looking at a problem with aluminum oxidization down the road affecting the iron? Or any other problem? Should I go back and use a feeler gage shim instead?
Thanks very much! Chuck Miller