50% preparation of the PLA originals, 45% preparation of the investment, and 5% management of the pour. You have seen making the trees with the PLA originals. Today I melted metal, poured, and held my breath. First metal pour. I also made some videos, but the autofocus on the Panasonic LX100-2 is so crap (or maybe it was the operator who was more focussed on the metal pour), that I have scrapped the videos. But some stills are OK, as you will see.
Next, was measuring the investment powder and water, using kitchen electronic scales. After mixing there is a 10 minute window for thorough mixing, removal of air bubbles in the vacuum chamber, and pouring into the investment moulds, which had been prepared beforehand. (see last post).
10 minutes sounded like lots of time, but this was a real time and motion study, having everything ready, with no delays. But when I saw the clouds of silica dust I remembered that I should be wearing a mask. So, quick dash, pull on mask, find hearing aids dislodged by the mask, and back to mixing the investment mixture.
And here is the result……
With many thanks to Stuart Tankard for his advice and encouragement.