I want to talk about this picture a little more, as it'll lead us on to splitting for panels.
On this piece, I've chopped off the feather edge which had formed by chopping across the grain with the axe to cut the stringy fibers of the juvenile wood which surrounds the pith of the tree. This stuff is laid down quickly as the sapling races up to get to the light in the woods and as these trees are plantation grown all the other saplings are racing against it, so it has to be fast if it wants to survive.
The juvenile wood needs to be flexible and strong to resist all the forces the sapling is subject too, such as whipping around in the wind and carrying a snow load, so it develops sloping, stringy, bendy fibers, which don't plane well at all and is regarded as a waste product during conversion.
Once the juvenile wood is removed, I'm left with a much broader surface to view the progress of the split when I'm using the wedges. You'll want to go easy when you get to this stage and it's where you can start to control the split a little. Notice that I've switched to plastic wedges and an axe. I can drive the plastic wedges in with the poll of the axe without damaging it and it's a nice axe, so I treat it well.
Also, I need to keep cutting the fibers to make the split go easy and I can guarantee that my axe will meet with an iron wedge if I use one. I don't need to explain what will happen then, but there will be cussing.
This piece wiggles about a bit, but it has no twist (spiral grain) and twist is your enemy, as it makes for a lot more work and a lot of waste wood. That's why I'm careful about stem selection when viewing the lot at the road head.
You can't really see small amounts of twist on the surface of the bark, but you can see a lot when you learn to read it. If you look at stem No.2 from the right, it's clear that this one has been wiggling about when it was growing . When you split a stem like that you'll end up with sections which need a lot of hewing and they'll also have sloping grain. That's just a pain, as you really want to be able to plane this stuff in both directions. It makes for a straighter piece of furniture if you can do that as it's assembled green. More about that later.
Once I've made my initial selection, I'll take off a length of bark and have a look at the patten of the fibers at the cambium layer underneath it. You can get a better idea of what's going on and see the slightest bit of twist, but it's subtle and needs a bit of an eye.
I didn't choose stem No.1 from the right, even though its long and very straight, because it's covered in loads of dark splodges. That's epicormic growth and although it makes for a nice bit of figure in a flat sawn board it's not your friend if you want a riven piece.
The forester was adamant that it was OK and wanted to sell me this stem, but I had a feeling about it so I resisted his wily charms and I'll show you why later.
They're cunning folk these forest folk, so you want your wits about you when you go in there to meet them.