North East Chapter – Irish Woodturners Guild

 January 2016

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.    

tn_Kristian Doherty starting a Cube within a cube P1040140

 Kristian starting a Cube within a cube

 

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. 

 

tn_Christian Doherty progresses the 6th side P1040142

Christian Doherty progresses the 6th side

 

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 paste. 

 

tn_The two inner cubes before release P1040143

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 items:-

 

Yew lamp - Kevin Milton P1040144

Yew lamp – Kevin Milton. 

 

 

tn_Holly Sycamore oil lamp - Eamonn McKelvey P1040150 (2)

Holy/Sycamore oil lamp – Eamonn McKelvey.

 

 

tn_Walnut Bowl - Cecil Barron P1040145

Walnut bowl – Cecil Barron.

 

 

tn_Poplar platter - Gerard Corrigan P1040148

Poplar platter – Gerard Corrigan. 

 

tn_Ash bud vase - Bob Dier P1040152

 Ash bud vase – Bob Dier. 

 

tn_Iroko home made scraper - Dave Carroll P1040156

Iroko tool handle – Dave Carroll.