|Forum topic by JesseTutt||posted 09-16-2012 04:33 PM||1343 views||0 times favorited||7 replies|
09-16-2012 04:33 PM
When I got my new Grizzly G513×2bf bandsaw I aligned the upper and lower bearings so that when I turned the blade manually none of the bearings would turn. I did this with the upper guide about 12 inches above the table.
Yesterday, I was playing around and cut some thin strips of 3/4” material on the BS. I lowered the upper guide to about 1” above the table. During the cut I noticed considerable drift of the blade. I raised the upper guide and checked alignment and everything looked good. But I would still get drift. Then I noticed that with the upper guide 1” above the table the blade was constantly rubbing on the right bearing.
After investigation I found that as I raise and lower the upper guide the distance between the blade and the side bearings change. If I correctly adjusted (the blade barely not touching any bearing) for resawing a 10” thick piece of wood when I lower the upper guide the gap between the blade and the right bearing decreases, and the gap between blade and left bearing increases. This leads me to theorize that the upper guide assemble is angled toward the left.
What do you think?
-- Jesse, Saint Louis, Missouri