Here is #diytool for fixing pitting (porosity) on castings from @kendrarosejewellery - “First you need an old/broken flex-shaft bit that you can grind to a dull point. Next you hold it with pliers and heat it up about halfway with your torch until it is red hot and bend the upper third with more pliers into a hockey stick like shape. Polish the end face of the hockey stick. You then put it back in the flex-shaft and carefully run it over the pits to burnish the surface & sand lightly! voilà, you’re done and you haven’t warped the surface. The trick is not to overdo it.” Thank you so much Kendra for taking the time to share this with us! We appreciate it! #diyjewelrytool #flexshaft #lostwaxcasted