I have had this planer for 10 years. It has always been decent until a few days ago. Normal width boards run well through the planer. There has aways been a hint of snipe, but normally not a big issue.
I ran 4 glue ups through the planer at almost width capacity (12"). I have a Wixey planer thickness gage on the unit. Taking 0.005" at a time, the last 4 inches on one side had chatter. It was like the head lock came loose or something. If I put pressure up on the board, it got worse. I adjusted the outfeed and infeed so they did not put as much pressure up on the board and made matters worse. It always happens on one side an normally is about 3" across the board. The deep ones were about half way across.
Any ideas of what might be the problem? Bad out feed roller or infeed roller? Head lock not working correctly? Bad bearings? Bad chain?