I've seen it but never tried! To be honest my pressure flaking is rubbish. The great thing about porcelain is that it knaps just like high quality flint - but it's not quite as hard. There's also no impurities or frost fracture or 'secret geodes' when you crack into a big bit of it. And I can make a mould and have 250 pieces the exact same size and weight, and train up participants using it... then measure the resulting 'assemblages'. Here is a poster I presented in the Spring that summarizes it and has a few photos:
https://www.academia.edu/12516652/C...Palaeolithic_22-23_April_University_of_Oxford
Now I just need to buy a kiln and wedge it into my one bedroom flat somewhere my husband wont mind...
https://www.academia.edu/12516652/C...Palaeolithic_22-23_April_University_of_Oxford
Now I just need to buy a kiln and wedge it into my one bedroom flat somewhere my husband wont mind...