In continuation of my earlier post re: how I process a recently felled section of Alder trunk into a bowl, for those who have never done this before...
Ok, so the roughly turned bowl had been nice and warm in the wood kiln for the last 6 or 7 days; I could have taken it out earlier, but with New Year etc...it could wait. The first 24 hours in the kiln gives a good idea as to the likelihood of cracks developing, so close and frequent checking is called for. Fortunately I caught a couple of incipient cracks, which were quickly checked by a ‘dab’ of CA Glue.The blue staining on the first photo could be the onset of spalting, but I suspect it is just mineral staining.
You will notice that I left my chuck attached to the bowl while still in the kiln. I often do this on freshly turned green wood, as the jaws bite well into the tenon as you need all the help you can get when you come to getting the piece back into ‘round’. Although only a couple of cracks occurred, warping of the piece will occur, no matter what drying technique you use. The second photo shows the distortion of the piece and clearly demonstrates the need to leave enough ‘meat’ on the bowl before you begin the drying process. Leaving the bowl walls too thin could mean having very thins or even not being able to get the piece back into round.
With my Alder bowl I was quickly able to get the outside, lip and inside into ‘round’ and into the shape I wanted. I then finished the bowl with 2 x Sanding Sealer, I x abrasive polish (Yorkshire Grit), 2 x wax finish (Wood Wax 22) and finally 1 x Microcrystalline Wax.
I then removed the bowl from the chuck and reversed it into the Cole Jaws in order to turn off the tenon . With the bowl still mounted on the lathe I thought the piece needed a ‘bit of decoration’,as the Alder piece lacked good grain definition. So I then cut two grooves to create a band over which I cut a ‘textured’ finish with the Sabre Burr. I applied a some PVA glue to the band, then some ‘glitter’.
So there you have it from tree trunk to the finished article. There are a number of pros and cons in turning a piece this, but I think the biggest ‘pro’ is the satisfaction and experience gained. This bowl particular will probably go to the local dog charity.