Habe mal in der Ingleton Töpferei nachgefragt. Kreativität ist wohl gefragt im finden des richtigen Materials.Wobei es hier ja schon absolut praxistaugliche Antworten gibt.Hier die Antwort von Dick.
LG
Landleben
Howdy Micha,
The discs we use, or "batts" as they are called are made from plastics material reinforced with fibres in large sheets which I bought at a bankruptcy sale years ago. I don't know the name of the stuff, but it's extremely strong. Any plastic sheeting would do at a pinch, Formica, Perspex, stuff like that....somewhere near you there's a factory chucking out skips full of offcuts of the stuff!... boatbuilders, kitchen manufacturers, signmakers......
Sawn into smaller squares, pencil line across the diagonals to find the centre, hole drilled and bolted tightly together about 6 at a time.
Draw a circle on the top one and trim them all together on a band saw. No need for them to be perfectly round, just no sharp corners.Unbolt them and drill the second hole individually.
Put them one at a time on the wheel and smooth the cut edge with a file on the slowly turning wheel. Turn over & do the other side. Use a mask and clean the debris out of your wheel, don't let it get into your clay.
Mine last around 3 years of daily production throwing, when the outside hole becomes elongated and the batt gets wobbly. Then you simply drill another new hole next to it and so on..... I'm using some that I made 20 years ago, with 5 or 6 holes in them.
When I started fifty-odd years ago, we used to use asbestos sheets......imagine the Health & Safety issues of that nowadays!
We live and learn!....hopefully.
Hope this helps
Grace through Adversity,
Seeya. Dick.
Dick Unsworth.
ingleton.pottery@gmail.com
www.ingletonpottery.co.uk