Channel Islands Woodturners | Southern California
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July, 2013 – Oskar Kirsten

  • Nested set in Carob burl
  • Two sets of nesting bowls made with the Oneway system
  • Pres. Chuck H. announcing our non-profit corporation status
  • Show and Tell: John A. with pierced and painted Jacaranda lidded box
  • Bruce O. with segmented forms with colors reversed
  • Jim R. continues to explore the female form - multi-axis turning, some carving
  • Don P. with 1x12 screw cutting jig
  • Oskar Kirsten from San Diego begins demo of coring methods
  • Offering advice on mining this burl cap
  • Two views of the cutter tip - 3/8
  • Several types of spacer blocks used to make sure bottom thickness relative to tenon is correct. (Oskar likes set screw shaft collars available from McMaster-Carr.)
  • Oskar's favorite is the Oneway coring system - cutting knife and support are spherical shell segments
  • Set in Carob wood
  • After setup, first cut, support segment outside the cut. Live center on Morse taper extender for safety and support since tenon is shallow
  • Note position of support segment at completion.
  • Oskar uses a large diameter but shallow tenon - here gauging for 4
  • Cutting the bottom tenon for the next coring operation - here held between centers
  • Setting up for 2nd core - note shallow top tenon.
  • This extension allows sighting down from the top to check the planned cut
  • 2nd core using same knife as 1st core.
  • Biggest bowl has carved feet - note Oskar's button label
  • Set in burl wood - edge dyed for drama
  • Result of the two cores shown today - wood is dry Eucalyptus. Oskar prefers dry wood.
  • Explaining how to core deeper shapes - this done with McNaughton system but do-able with Oneway.
  • Same Carob burl set showing nesting
  • Oskar makes and sells the Kirsten-Kone
  • Cutaway shows how Kone is used to hold hollow forms for final shaping of bottom and sanding
  • He also makes and sells toolrest with pin that prevents damage to opening while hollowing.
  • Raffle fundraiser with lots of donated wood - Acacia, Walnut, Cherimoya, Carob, Holly
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