Hi Andre,

Thanks for the pics. Actually I was just curious about how to stabilise the flatness over such a long and thin shape. Of course a triangular section is obvious to me now! :)

My machines do not yet deserve scraping. In the UK we have a phrase "making a silk purse out of a sow's ear". It means that I could try for a long time with lots of sewing to turn a cow's ear into a silk purse. In the end, maybe it would look a bit like a silk purse. But actually it would always be a sow's ear!

It's the same with my cheap lathe! :) I'll save the scraping for another lathe...

I had thought about making a small flatness reference by scraping 3 plates into each other - but that would take a long time too!