North Brisbane Lapidary Club

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Flames

March 27, 2020 By Carol

Types of flame

Reducing Flame (sometimes referred to as a bushy flame) – pale blue with a yellowish tip, because there is more fuel and air.

  • Ideal for annealing

Neutral Flame – adding more air produces a neutral flame, this flame is all blue without a yellow tip. It has a softly defined bright blue inner cone and pale outer cone. The hottest point of the flame is the tip of the inner cone.

  • Ideal for most soldering jobs where a large area can safely be heated.

Oxidising Flame – when adding even more oxygen the inner cone will become smaller, sharper and brighter. The drawback of this flame is that it floods the work with unconsumed oxygen which can result in oxidation and damage to the metal.

  • Used for delicate soldering jobs where the heat must be intense and localised.

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Filed Under: Metalsmithing

COVID-19 Update 

All members and visitors to the club must be fully vaccinated for Covid-19. Social distancing is still required.

Work Sessions

  • Tue EVE Work Session
    • 05/07/2022
  • Wed AM Work Session
    • 06/07/2022
  • Fri EVE Work Session
    • 08/07/2022
  • Mon EVE Work Session
    • 11/07/2022
  • Tue EVE Work Session
    • 12/07/2022
  • Wed AM Work Session
    • 13/07/2022

Club Events

  • Winter Fossicking Trip
    • 18/06/2022 - 16/07/2022
  • General Meeting
    • 27/07/2022

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