North East Chapter – Irish Woodturners
We were pleased to welcome Kristian Doherty, from Craobh Cuig
Deag Chapter, for our January demonstration. His project was ‘A Cube within a Cube within a Cube’. Starting
with a cube of Boxwood 75mm x 75mm, Kristian brought us through each step of the process. As the process
would be exactly the same on all six sides, five sides were pre-prepared to within a fraction of release,
leaving the sixth side for demonstration.
Kristian starting a Cube within a
The center of the sixth side was punch marked to facilitate
marking a 55mm radius circle, before mounting the cube in Cole Jaws. Hollow the 55mm area to a depth of 14mm. Undercut this circle to a depth of 5mm to within a
fraction of the corner of the middle cube. Mark
20mm in the centre of the 55mm and hollow to a depth of 14mm. Undercut this circle to a depth of 5mm to within 1mm of
the corner of the inner cube.
Christian Doherty progresses the 6th
After hollowing, a purpose made block is fitted in the void to
stabilize the cubes while reverting back to make refining cuts on the other five sides – working
incrementally to release each side of the cubes. Final release of cube may have to be assisted with the use
of a sharp knife, and the corners cleaned up with a Dremel. The cubes were finished with a 50/50 beeswax and baby-oil
The two inner cubes before release
On this occasion Kristian used low melt machining wax which was
prepared in a deep fat fryer, and ladled into a purpose made mould to reflect the void. The wax was allowed to set, and the wax block fitted into
the void in the cube. As each side was
processed a stabilizing wax block was taped securely into each void.
To complete the project a small stand was turned with a
hollowed cone at the top to support the cube sitting on one corner. Thanks Kristian for presenting a very well prepared
demonstration that required painstaking accuracy and skill.
Thanks to Seamus Cassidy for his critique on the following
Yew lamp – Kevin Milton.
Holy/Sycamore oil lamp – Eamonn
Walnut bowl – Cecil
Poplar platter – Gerard Corrigan.
Ash bud vase – Bob Dier.
Iroko tool handle – Dave