I made the form before examining the Tree. The Fire Bell is coming along & will be tested for strength by January. There are a lot of Ancient experiments with Concrete here, best surfing beneath the Soil & Crystalised also. They mixed it with everything for strength or Colour. I'm finishing it with Lime Plaster that is plaster mixed with Cement. How Limey is a matter of discourse. I 've begun with a small amount of the softer fabrication intending less Cement in a final Layer.
