Wednesday, June 25, 2014

working notes: rift sawn oak

Whether you like it or not, a ring porous wood like oak, ash or hickory will always have a prominent grain affecting the look of your project. This can really make or break the look of what you have made. Wood is a natural material and its grain is part of that, no doubt about it. But there are times when a prominent grain becomes a distraction to the overall design. I have an entire blog post on this subject here and will not repeat it all, but let's just review the visual differences in how wood can look depending on how the log was oriented on the saw.

First, a sample of PS white oak, the most common and cheapest cut (where the board face is parallel to a tangent of the log round):


Here is a sample of PS red oak:



Next, a sample of QS white oak (where the board face is along a radius of the log):






Here is the QS cut in red oak:



Here is today's subject, a RS sample in white oak that comes from a board that is somewhere between the two cuts above:


A RS red oak sample:



You can see at a glance that the RS wood has a quieter grain with the vertical lines of those annual rings lining up just so without the medullary ray flecks that the QS wood displays. I think this makes rift sawn oak easier to work into a design than either of the other two cuts. And not only for the frame in frame and panel work; see how well mannered it is as panel too:

[photo missing]

 So the answer when you want to use an oak but do not want the prominent grain shouting over the overall design is to use RS wood. You get oak's strength, more stability in use than PS stock, and a quiet unobtrusive look that lets the shape of the design get a word in edgewise. A table leg is another obvious situation where this becomes important. In fact, I'd prefer RS wood for the table's rails too. Only for the table top would I consider one of the other cuts, probably preferring the QS material for its stability. Save the PS wood for panels or pieces that go into sight-impaired homes.

In any case, if you pay attention to grain patterning in your work, the results will be visually more pleasing and you will find yourself searching for RS wood. This is why we have our red and white oak inventory segregated by cut.


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