Hello again. I printed out a plan and side elevation 1:1 so
The first thing to do is make a simple jig for cutting circles (arcs) in wood veneer. For this I will be using; an offcut of 18mm MDF, four pieces of 3mm Hardboard (Masonite) and a 6mm dowel.
First drill a 6mm hole 15mm in from two adjacent edges in all the Hardboard pieces.
and a 6mm hole near one end and central in the MDF
Glue the dowel into the hole in the MDF and using a suitable jig, route (with a straight sided bit) the four Hardboard pieces to the required radii; 42, 50, 58 and 66mm.
That’s the jig!
Now to cut some veneer. This is done using a knife. Personally I use a scalpel. When cutting the arcs tape the veneer to the MDF base and cut the lesser of the radii first
The veneer is taped in place so that the same arc centre is used for both arcs to be cut, giving a uniform width over the whole of the piece. Second cut
Do this for all three colours; yellow, orange and red. Four times for each colour. Now the purple segment would have its lowermost tip (side elevation) where the centre of the dowel pin in the jig is so I used the 42mm template freehand to provide some pattern overlap (this will be covered by the black sides, later)
Using a piece of masking tape on the underside I put the pattern together to check the fit.
This looks good so I taped the face side of the three arcs (yellow, orange, red) using veneer tape. This was done for all four sides. I placed an arc on the paper pattern and placed the 66mm radius template over it to perform the cutout in the arc.
This was done for all four arcs, They were taped together, with the purple segments as well and a white (sycamore) centre piece cut (using the edges of the yellow strips as a guide) and taped in. A quick look at the reverse of the pattern shows a fairly good overall fit.
The colours are not uniform on the back as dye penetration through the veneer varied. Using plain veneer the rest of the layer was built out and the result glued to it’s 3mm ply base layer. Its in the clamp drying at present so no picture yet.
Thats all for now
Be seeing you
-- Martyn -- Boxologist, Pattern Juggler and Candyman of the visually challenging. http://www.theartofboxes.com