RKON wrote:

Tbone:

Was the table mounted on the trunions when you checked it?


Very good point. Could be that the trunion is the cause.
Sometimes shimming will take out the sag, depending on
where it attaches to the bottom of the table and how
bad the sag is.

Another thing to be aware of is that cast iron has cooling
stresses in it, thin areas shrinking faster than thicker
adjacent areas. Much of these cooling stresses are relieved
naturally over time. They use to leave cast iron engine blocks
sit for several months before precision milling and boring.

If they surface ground your table back to flat and took off
more than needed the table could deform again over the
next several months. Check the depth of the miter/mitre
slot on the old table against the depth on the relacement
table. If the latter was remilled/reground it's depth will
be shallower by the amount removed. Sometimes they
take off a lot more metal than necessary just to make
sure they get the surface flat quickly (two passes rather
than four means less time checking where they're at)

On the older Laguna Tools bandsaw tables, the miter
slot is a sliding dovetail. After Jim Stain (who was at
LT befo going to MiniMax) had a replacement table ground
flat for me my miter gauge bar saw too high to use.

Just something to think about (and worry about?)

Checking things out and setting equiptment/machines up
can get out of hand. Getting things where they're not
dangerous and good enough to do their job is probably
close enough for what most of us use them for.

charlie b