Trevithick Boiler End
The first part to be made for the Trevithick dredger engine is the domed end of the boiler. It is formed from copper plate which is 3mm thick. first a circle is marked out, then bandsawn from the copper plate.
I decided to make a wooden form. Fortunately I have a CNC lathe (see earlier posts about the CNC conversion of a manual lathe), so drawing the profile and generating the G code using Ezilathe was, well, easy.
This is the final roughing cut, and starting the finishing cut.