New Problem With Blade Marks

I posted this at SMC earlier:

Hi Guys,

We've been cutting miles of ply and hardwood with the same PC Mag 325 and original rails (classic EZ style). There hasn't been a single issue for ages. I've posted many pictures of projects and have a bunch more from recent work.

Suddenly, today, while cutting some poplar and soft maple, we noticed blade marks on the edges even transferring to the EAC-1s. The blade was replaced but it didn't help. The saw/rails etc have never been droped and we don't use that saw hard, possibly risking the arbor, like a dedicated framing saw. The blade marks are on the down stroke (ie: blade cutting down in the back) and appear to be only on the upper third of the edge.

I know from past experience the EZ forum crew will solve it.

Thank you in advance for your help.

Adam


I'll post here from now on if that's better.

Thanks guys

My guess is the saw blade for some reason is no longer aligned properly with the ex frame....or worse...the saw may have a bad bearing.

Did the tooless bolt spin or come loose? My left blade did during a cut, and I reseated it, and it did it again. What I didn't realize, was enough junk got behind it, that it didn't grip well when I tightened it down.

Welcome to the EFG forum, Adam! For those who don't know Adam, he's a very accomplished professional woodworker who has done some great things with his EZ tools. Hopefully he will find the time to post some pics of his outstanding work here on the EFG forum in the, "Show off" section.

As I said in my SMC PM to you, it sounds to me like something might have happened to make the arbor go out of alignment. If it were just as simple as the blade being warped or it somehow not sitting flat on the arbor base washer the blade would wobble and that would show up on more than just the backside of the cut. From your description I'm not 100% sure of exactly where the tooth marks are showing up but if it's only in one part of the cut, (The backside in this case) I would suspect the arbor. Either that or the saw is somehow no longer sitting square on the EZ base. Do you have another saw set up to cut on the EZ rails? Is there a chance that the saw was dropped without you knowing about it?

Bruce