I have been working very busily on three new projects. The first has been perfecting the smaller holed version of the Constellation model.
Making a pipe with smaller finger holes is not just a mateer of putting in smaller holes. They have to be adjusted so that the spacing is further part. When I did this I found that the upper octave did not play correctly. So I decided to use a smaller pipe. I drilled the pipe out to 12mm, as usual. I did not use the reamer which opened up the pipe to 17mm at one end and to 13mm at the other. I made a few trial pipes and found that the pipe worked. I am now in production, prducing a run of forty pipes.
The 12mm bit does not always run straight. These I redrilled with the 15mm bit. That runs true. Some woods have a grain that 'turns' the bit. Even 1mm of out of true will result on a pipe with a hole in its side. I turn the pipe to 20mm and sand it 2mm more. That leads to a wall thickness of 3mm. 2mm out of true and the bore hole appears out the side of the pie during sanding.
However I decided to abandon the usual fipple [with the narrow widthof 3mm] of the Constellation, and used a wider fipple [of 6mm]. Instead of curving the fipple edge to produce softer and milder tones, I used a traight edge, which give brighter and stronger sounds. The upper register came in better.
I have used a batch of Macrocarpa that came from a house in Grove road. It is very dry. The wood is softer than any other wood except Radiata pine. However it polishes up to a beautiful finish. The tone is hard to get right, as the wood is 'hairy'. I have to work longer on each fipple to get a good result. Now I am confident the new pipe will work. I am calling it the "Orion" after the brightest evening constellation in our summer sky.
I have made monor changes to the Constellation model too. I no longer use a reamer, but start with a 15mm bit. This gives a hole similar to the present Constellation model, but it is not "Conical". The result is a pipe with a nice bright sound a a very good range. I am calling this pipe "Scorpio"
A second project I have been working on is a "D" pipe of aluminum tube. I had a few false starts with the kind of ripple. May second attempt came close, so I refined it to get my final design. These are called "Scorpio Aluminium"
I then bought some 25mm Aluminium pipe and attempted a "DD" pipe. I was most srprised at the beautiful sound that resulted. To my surprise, I could also ply it like a fife. This is called "Gemini" as it can be played two ways.
Fotos of all these developments will follow later today.
Cheers Chris the Pipemaster.