redshark1

I put a new blade in just prior to this.

Thanks for the attention my lined log has been given. I believe the fallen tree I cut a month ago was a Hawthorn, but I may be mistaken. The lines were at right angles to the movement of the saw blade. I have returned to the site and cut another couple of stumps. This time of oak trees that were shading a hedge and that we decided we needed to get rid of since we have laid the hedge and are wanting it to thrive. The lines appeared on the oak of 8" diameter that was cut with my excellent Faithful 30" Bowsaw. No lines appeared on the 6" oak that was cut with my Draper Expert Pruning Saw. So it would appear that the lines are something to do with my Bowsaw although I cannot explain it.

Thanks for your responses. Yes the pattern is the same in all the cuts. It was toasted on both sides! I'll post the other side of this cut. The log has been rolled 45 degrees so the lines appear horizontal. When I magnify the photo the lines seem raised like ridges. I can see the pattern when I magnify the end of the log too as I have the original photo on my computer. It must be connected with the trauma of the tree coming down, but I can't explain it and haven't seen this previously.

Please tell me what this is! I was out the other day in my local wood and cleared up a fallen tree that had fallen in the storms and blocked the footpath. I noticed that after sawing through the log, so that I could move it in several pieces, there were these remarkable vertical lines on both sides of the cut. I've not seen this before and wondered if anyone here could explain it? Cheers.