|Project by dgom||posted 08-28-2016 03:40 PM||1335 views||4 times favorited||6 comments|
A few years ago I milled some birch logs into lumber using my home made chain saw mill. The lumber has been air drying since then and during the time I have been thinking of what to do with the material. After renovating our entryway last year a radiator was exposed and has since then been a real eyesore, so after some pondering I envisioned a piece of furniture with two functions: a bench and a radiator cover. So now it was finally time to get some good use of the lumber.
I started with sawing off the edges of the raw cut lumber to get 20 cm (8’‘) wide boards that could be glued into 40 cm (16’‘) wide pieces (the reason for this is that my planer is only 20 cm wide). A lot of work was done with hand planing all the warped and cupped pieces before they were fed into the planer. Finally, when the planks were jointed it was time to glue them up. I also filled all the cracked knots with epoxy resin and sanded everything flat.
It was then that i stumbled upon Diresta's massive oak bench build and decided to use dovetails to join the side pieces to the top piece. I have never made any dovetails before so I started to study how to make them using hand tools only and found great help by watching the following excellent video from master woodworker Paul Sellers.
The glued boards were not perfect and there was a slight cup which had to be carefully taken into account when laying out the dovetails. I then began the process of cutting the dovetails using only a hand saw, chisels and a mallet. I had to brace myself before starting to work the 2’’ thick boards but actually it was a delight to work with sharp hand tools to carefully cut all the dovetails. I learned a lot during this process!
To allow the heat from the radiator to circulate, a number of one and a half inch holes were made along the back of the top piece. The shelf is narrower than the top piece to make room for the radiator and to allow air to circulate freely. The shelf piece was tapped into the side pieces to create a discrete look of the joint.
After gluing all the pieces together I immediately sanded the dovetail joints to allow the sawdust to join with the glue to hide some small gaps in the dovetail joints. It seems as this strategy worked quite well. I planned to round the dovetail corners even more but then I thought that in a few years there might be a need to refinish the bench and take care of some abuse (children in the house) and then it will be good to have some extra material to work with.
The bench is finished with a moderately white pigmented hard wax oil (Osmo 3041) to keep the white birch natural and not become too yellow. The result is a smooth matte natural looking surface. Parts of the birch is spalted (a surprise revealed after planing the boards) which adds an extra touch to the overall look.
Overall it has been fun and satisfying to follow a birch log from the lumber pile to the finished project and in addition do all the processing steps myself!
The bench is 110 cm long (43’‘) and 45 cm high (~18’‘).
Some more pictures below.
“The chain saw mill”
“Preparing to mill some boards”
“The ventilation holes”
“Dovetail detail 1”
“Dovetail detail 2”