I was sanding a wide (15") on my Performax 16-32 sander. Made several light passes all was well. The next pass the stock had burn marks at one end of the drum. I was running it at a slow speed to avoid kicking it out on overload ( I do not have smart sand). I checked the paper immediately and it did not appear to be loaded up but I used the cleaning stick and made another pass. No additional burning occurred but stopped at that point and finished the leveling with my ROS.
What are the causes of the burning. Was I running too slow of a feed speed? This was a glued up panel I was trying to level and using the sander because it was too wider for my planer, could the glue joint have caused this?
Thanks for your input.