first off thanks to all you friends

i will make the lather do an alluminium or strong plastic holddown that push like an arc the container,like a sandwich,very simple plate on the retromobo and a little bar on the container you'll see it soon

however as you can see from the photos for now the container is only been drilled 20cm deep,becose i'm thinking about how to work the base... i wanna a lot of surface area on the core

cya men
thanks again

Alessandro