In a previous article I outlined how a log becomes pieces of useful turning stock. These pieces are oddly shaped, lumpy and have flat, rough chainsaw marks. Many woodturners will further process these pieces by knocking off any large corners in an attempt to make them easier to fit on the lathe. A bandsaaw is a great tool for cutting curves and “rounding” blanks. For the piece I am working in this article, my bandsaw is too small. Oh, I could have used it but it would have taxed the saw to the point of not being safe as well as being slow. My chainsaw was a safer, quicker alternative.
Even after “rounding” this blank with my chainsaw it is still too large to mount on my lathe in normal fashion. Luckily, the headstock on my lathe (a Nova 1624) swivels. This allows me to work large pieces outboard.

In this picture, we are viewing the piece from the tailstock end of the lathe and looking down its length. Turning outboard is not as safe as turning inboard because I cannot engage the tailstock to provide additional support. Still, the added risks can be mitigated by turning at lower speeds, taking lighter cuts and having some patience.
My goal at this time is to reduce the blank to the point where it is truly round (with no flat spots) and to where I can swivel the headstock back inboard and engage the tailstock. Then I can really get to work.

Decision-making time… I need to develop a vague idea of the shape I want this piece to be. Because of its width and thickness, I see a large salad bowl so that is what I aim for. For a functional bowl I want the rim to end-up being flat when viewed in profile and gently curve down towards a relatively wide base or bottom. This means the rim , or top, of the bowl will be at the headstock end (and thus, the bottom towards the tailstock).
Another decision I have made by now is whether this bowl will be turned green or roughed out, dried and re-turned at a later date. You see, this blank is full of moisture. As it dries it will warp, twist and distort. The results can be dramatic and appealing but, cracks may develop rendering it useless as a functional piece. This bowl will be roughed out and dried slowly for more predictable results.
Roughing out green or wet wood is serious fun. SERIOUS FUN!!! Most domestic woods product long, thick shavings and the going is easy. This makes a huge mess but is nothing a shovel cannot handle (a broom is not an option. Think grain or feed shovel here!). The smell is fantastic (ok, some woods smell like the back of a barnyard but this cherry I am working is awesome). The other great thing about roughing out green wood is that I do not have to worry getting a smooth, finish-ready surface. The shape does not need to perfect either. These things will be refined in a few months when the wood is dry.

Here you can see the roughed out shape. The blank has been reversed on the lathe so that the bottom is at the headstock end. This allows me to access what will become the interior of the bowl and rough-hollow it out. In an effort to make the best use of this large piece of timber, I use a coring rig. A coring rig allows the woodturner to remove cores of a larger piece. These cores can later be made into other roughed blanks and more bowls. The other option is to hollow out the big blank, turning the interior into shavings and ending with one large bowl-to-be. Coring will give me several bowls-to-be, with less effort, in less time and with less waste.
The coring rig I use is the Woodcut Bowl Saver. The unit consists of a pair of curved blades which are fed into the wood as it spins on the lathe. These blades are attached to a pivoting table which moves with the blades. There is also a long handle allowing great leverage and easy insertion of the blades into the wood. The odd thing about the leverage generated by this handle is that slow and steady works much better than brute force with this tool.
As mentioned, the Woodcut Bowl Saver comes with a pair of curved blades. The larger blade allows one to take a core approximately 12” in diameter while the smaller allows down to 5” or so. Depending how the whole unit is lined up relative to the wood, cores can be made any size between these two measurements.
Conventional woodturning wisdom says to take the largest core first. The largest core has the highest value as a finished piece so we want to take care to make it right.

This image shows the coring rig set up and in place to remove the largest core.

Here we see that the largest core has been removed. The large rough-out will now have the interior refined a little and evened out. Once that is done, it will be set aside so attention can be paid to the core itself.

The core has been remounted on the lathe and the Woodcut Bowl Saver has been positioned to take a core from the core (!) using the smaller blade. I did not set this up very well and the results was a smaller core-from-a-core than I wanted. It is still a very useable piece and it will become a small candy-dish or perhaps a hollowform or an urn. Time will tell.
Here you can see the 3 rough-outs which came from this blank. Better planning and execution would have produced one extra bowl-to-be, perhaps two. Despite this, it is very gratifying to have these extra rough-outs to work with instead of turning the interior of the largest into shavings and garden mulch.

I have coated the end-grain of each of these with Anchorseal, a wax-emulsion which will slow down the drying of the blanks. This will help to minimize the cracking which often happens as wood dries. You will notice that the walls of these bowls-to-be are thick. This is done to allow for the warping which will occur as they dry. I need to have enough material left so the warpage can be turned away from the inside and outside and result in a round (not oval) finished product.
These blanks will now sit in storage for 6 to 18 months until they are dry. I will know they are dry when they stop losing weight and I will weight them every month or so. When they are dry, they will be returned to the lathe for finish-turning and be made ready for your dinner table.
So there you go, you’ve learned something today (maybe a few things). I hope you enjoyed yourself. Thanks for letting me be part of your day. Until next time…