Japanese technique of preserving/antiquing wood “Shou-sugi-ban Yakisugi 焼き杉“.

Japanese technique of preserving/antiquing wood “Shou-sugi-ban Yakisugi 焼き杉“. For sealing is used Tung nut oil. This was tung oil. Furthatch ÚlfBjörn. We are not saying it is “Traditional technique“ there. Customized. It is air dried for 4 years. Olha ai Ezequiel Pasini, presta atenção na tecnica, abçs. would using a torch on the wood harden it and make it tougher? I remember reading about primitive people fire hardening spears, would this work on the same principal?