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Making a cut to avoid cracking3/21
I am intend to replace a wall with an European Oak beam of 25cm square and 3,6 meters in length. The Oak beam has to support the small beams of the roof. It will be delivered kiln dried and ready for use. I like the look of oak but I am not fond of the mayor cracks one sometimes sees in beams above the fireplaces. So I thought maybe a clever cut can increase my changes for a lasting good look. The Oak beam will also be used to compensate the height differences between the two ceilings. So only the right site and the bottom part of the bam will be visiable. I do not know how the beam will be sawn, so I included 3 pictures. The yellow line indicates a saw cut I propose. Do you think any of the suggestions will help?
My preference is the top picture. The third pix will affect strength quite a bit.
Kerfing is very effective, but the larger the piece, the more chance that a second or third crack will develop, especially in the high shrinking species like oak.
Thank you for the advice,
But do you think that (image 2) three cuts instead of one further decreases the chances for a second or third crack? or not enough to outweigh the strength loss?