The most difficult part of cutting the join, was due to the circular nature of the dowel – making it increasingly difficult to cut on straight line on the band saw, let alone a matching one on the other side of the dowel.
Therefore i created a handy little innovation as a tool, from a square section of pine blank. I marked out the centre of the blank, by drawing two lines to the corresponding diagonal corner, and one line marking out the mid line of the blank (a vertical line in the middle of the ‘x’). the square section was then placed vertically, in a vice on the bed of a pillar drill. The drill bit inserted was of the same diameter of the dowel, for example the sample 25mm dowel , blank was drilled with a 25mm circular drill bit , the whole way through the blank , then cut along the mid line so that you would be left with two rectangles with a semi-circle (25mm diameter) cut out from each.
This then acted as a type of vice to hold the dowel straight as it was going through the band saw – the dowel could be taped in to be held secure. If measured accurately enough, this tool could also be used to measure and draw out the joint onto the dowel; the cut of the semi circle acts as a straight line to mark out the joints along the side of the dowel – which is quite difficult to do using a straight object held against a cylindrical surface, the mis line drawn onto the blank can also be used to find the centre line of the flat circular surface on the end of the dowel, and its perpendicular line can be found along the blank on the flat edge of the semi-circle.