This bowl is made using the single board and matching grain technique. I chose to make two bowls from the board so there would be minimal waste. By marking the board on one side with different markings on each edge it was easy to match up the segments later to get the matching grain. Note this board was a cull from a previous project. Although it had nice figure the color was not good throughout the board. The result was somewhat interesting and perhaps a keeper for some people.
The miter saw was set to 15 degrees and after each cut the board was flipped and cut again. The stop setup ensured each piece was exactly the same length. I made 24 pieces from the board which was 42 inches long by 5 ¾ wide and 1 inch thick.
The following pictures tell the story of how the bowl blank was assembled and cut. Then it was glued up into a bowl blank and turned.
Of course there are some limitations to the form you can achieve with this method but I pushed it to the maximum this time to get the form I wanted. Generally you end up with a 45 degree slope unless you make an effort to change that result. I drew the general shape I wanted on a piece of paper in order to lay out the angles I needed to get the form I wanted. It worked out fairly close so I was happy with the result.
After The 24 pieces were cut 12 matching pieces were test clamped to check the fit
The fit was adjusted using shims along the center line and taped in place with packing tape. Then removed from the clamp and opened at the back to apply the glue.
The glued pieces were placed back in the clamp with the same shims and clamped tightly
A simple diagram was used to determine the angles to cut out the segment pieces, but don't reduce the angles for cuts 2 and 3 as much as the diagram suggests. Don't go much below 45 degrees or you will not leave enough wall thickness.
The maximum angle was use on the first cut and reduced for each subsequent cut.
The half circles were then glued together and stacked into the bowl blank. You need to carefully flatten each round segment before you do the final assembly. I used my drum sander for that.
When placed on the lathe the outside was smoothed first
It is much easier to turn the bowl as the grain is constant all around. The sanding is easier as well for the same reason.
Pictures of the first coat of finish in the next panel
E.G.
The miter saw was set to 15 degrees and after each cut the board was flipped and cut again. The stop setup ensured each piece was exactly the same length. I made 24 pieces from the board which was 42 inches long by 5 ¾ wide and 1 inch thick.
The following pictures tell the story of how the bowl blank was assembled and cut. Then it was glued up into a bowl blank and turned.
Of course there are some limitations to the form you can achieve with this method but I pushed it to the maximum this time to get the form I wanted. Generally you end up with a 45 degree slope unless you make an effort to change that result. I drew the general shape I wanted on a piece of paper in order to lay out the angles I needed to get the form I wanted. It worked out fairly close so I was happy with the result.
After The 24 pieces were cut 12 matching pieces were test clamped to check the fit
The fit was adjusted using shims along the center line and taped in place with packing tape. Then removed from the clamp and opened at the back to apply the glue.
The glued pieces were placed back in the clamp with the same shims and clamped tightly
A simple diagram was used to determine the angles to cut out the segment pieces, but don't reduce the angles for cuts 2 and 3 as much as the diagram suggests. Don't go much below 45 degrees or you will not leave enough wall thickness.
The maximum angle was use on the first cut and reduced for each subsequent cut.
The half circles were then glued together and stacked into the bowl blank. You need to carefully flatten each round segment before you do the final assembly. I used my drum sander for that.
When placed on the lathe the outside was smoothed first
It is much easier to turn the bowl as the grain is constant all around. The sanding is easier as well for the same reason.
Pictures of the first coat of finish in the next panel
E.G.
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