The Continental Op wrote: ↑Fri Oct 22, 2021 5:39 pm
Which way are they warping?
Are they cupping?
Yeah, that was the main problem.
kadman wrote: ↑Fri Oct 22, 2021 4:42 pm
Well with material that thin, and moving as quick, it all points to the type of material cut, and I suspect it was a through and through cut.
Which means it was the most material in a log cut. Its for quantity out of the log, not quality.
That'd make sense. These were (for the most part) ceiling/floor boards used for the purposes of tax-avoidance more than quality woodwork (a room with a ceiling height of 1.8m or less isn't counted in the rateable surface area in France). I would imagine they were the cheapest available boards at the time, and several split lengthways when I removed them.
kadman wrote: ↑Fri Oct 22, 2021 4:44 pm
There are a few methods of flattening the boards for marking out , but it would be helpful to see what we are working with.
kadman wrote: ↑Fri Oct 22, 2021 4:42 pm
Material 8mm and less for a jewellery box construction needs either dovetail or combjoint construction to hold the full width of the board straight. Any other box type construction joint will have vary levels of ability to hold the full width, ripple free.
As I said above, this was a random "thoughts while driving" thing that came into my head (prompted, no doubt, by the sight of all that lovely timber standing by the side of the road, just waiting to be chopped down and sliced up!
![Laughing :lol:](./images/smilies/icon_lol.gif)
)
The remaining boards are stacked in various (relatively dry, well-ventilated) places, waiting to come in useful. At this stage, I'm more interested in learning the theory of "stresses within pieces of wood" so that I don't waste time in the future trying to get a piece to behave in a way that will never happen. Or start to learn/perfect techniques that would help to control the problem in borderline situations.
If the planks were originally cut through-and-through from a single tree (or set of trees), chances are there are some decent pieces in the mix - I'll start to pay more attention to the end-grain in future!
![Wink ;)](./images/smilies/icon_e_wink.gif)