North East Chapter – Irish Woodturners Guild

 April 2016

Gerard Corrigan, North East Chapter, had made a three legged stool for each of his grandchildren in the past.  His latest grandson arrived only a few weeks ago, so it was an opportune time for him to demonstrate his methods and techniques in turning an heirloom stool for his grandson. 


tn_Gerard Corrigan demonstrating his 3 leg stool P1040286

Gerard Corrigan demonstrating his 3 leg stool



Pitch Pine was used for the project using a series of simple jigs for consistency – starting with an 11” seat mounted on a glue-block, a recess was cut out for chuck mounting.  The ‘recess measuring jig’ consisted of  two nails inserted in a short piece of timber – place one nail tip in centre point, while scribing the recess diameter with the other nail tip.  The inside of the recess was decorated using a point tool.  


The outside edges of the seat were rounded using a bowl gouge, and final cuts with a negative rake scraper.  Top tip of the day – the combined angles of a negative rake scraper should be less than 90 degrees.  Inscribe a pencil line 40mm in from the edge and mark 4, 8 and 12 o’clock points for positioning the 3 legs.  The legs would be splayed to give a greater diameter than the seat for greater stability.  This was achieved by drilling the three holes completely through the seat, drilling from back of seat to face, with the aid of a support jig which was constructed at an angle of 15 degrees. 


Remount the seat recess in the chuck and cut off the glue-block, and proceed to shape the seat slightly concave.  Next, set up the leg in a ‘spring chuck jig’ gripped in the chuck with the tenon held in the tailstock.  Mark out the coves and beads using a ‘story board’.  A ‘sizing ring’ jig fitted at the tailstock was used to ensure a consistent tenon size.  The turned leg was dismounted, and the tenon was fitted into a secure ‘holding jig’ which contained a pre cut slot.  The leg was adjusted to ensure the grain aligned with the pre cut slot and then tightened into position by means of a screw fitted in the holding jig.  The tenon can now be sawn to accommodate the fitting of a walnut wedge. 


tn_Gerard Corrigan - wedging the tenon P1040285

 Gerard Corrigan - wedging the tenon



Before gluing in the tenon it can be beneficial to heat the tenon to ensure a tighter secure grip.  Align the leg into desired position and hammer wedge into tenon.  Thank you Gerard for a very enjoyable and comprehensive demonstration. 


Thanks to Richard Coyle for his critique on the following exhibits:-



Mahogony Pedestal - Kevin Milton

Mahogany pedestal stand – Kevin Milton. 



tn_Laburnum Bowl - Dave Carroll P1040276

 Laburnum bowl – Dave Carroll. 



tn_Beech twirl bowl - Gene McConnell P1040277

Beech & Iroko twirl bowl – Gene McConnell. 



tn_Iroko Holy Water Font - Bob Dier P1040280

Iroko Holy Water font – Bob Dier. 



tn_Lidded jar, timber unknown - Eamonn McKelvey P1040279

Beech Jar – Eamonn McKelvey.