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Vertical Lines in freshly cut log.


redshark1
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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.

2022.02.26 Hawthorn 10 in diam on path cut up strange marks Steve Joul (2).jpg

2022.02.26 Hawthorn 10 in diam on path cut up strange marks Steve Joul (1).jpg

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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.
1499357456_2022_02.26Hawthorn10indiamonpathcutupstrangemarksSteveJoul(2).thumb.jpg.fd809ba24265c5a4e244ef3b012c16a9.jpg
108635734_2022_02.26Hawthorn10indiamonpathcutupstrangemarksSteveJoul(1).thumb.jpg.2c12d355b284a6763c9a8528a5319d8a.jpg
How very odd. They're very evenly spaced, so look manmade somehow.
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On 02/03/2022 at 14:40, redshark1 said:

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.

2022.02.26 Hawthorn 10 in diam on path cut up strange marks Steve Joul (2).jpg

2022.02.26 Hawthorn 10 in diam on path cut up strange marks Steve Joul (1).jpg

 

Yep, that is weird, was it the same in any of the other cuts ?

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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.

2022.02.26 Hawthorn 10 in diam on path cut up strange marks Steve Joul (3).jpg

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1 hour ago, muttley9050 said:

Must be something to do with the way it was cut surely?

That's what I thought too but it looks like it was cut with the Bushman lying next to it, the blade looks clean, a bit of a mystery

Wonder what species it is, I'll have a guess at Willow from the bark but I'm probably wrong.

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  • 3 weeks later...

I think it's from using the bowsaw. If you run your hand over the cut I bet there are high and low spots that correspond with the beginning and end of each stroke. I've seen something similar on a small 3-4" branch where the blade was not taught. Each stripe was roughly the same width as the blade. Nothing as pronounced as that though. That is a very interesting picture. 

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