MILLING THE COLUMNS for THE BOLTON 9 MARINE ENGINE
90% setup time, 10% machining.
The columns are tapered on all faces, so are difficult to hold, and difficult to measure.
I did a CAD drawing, to measure the taper angles, and to calculate some extra dimensions.
Then, in order to hold the castings in the milling vice, I made some accurate wedges at the appropriate angles (3 and 12 degrees) in wood and aluminium.
I actually progressed a bit further than the photos show, even roughing out the condensing tank.
here comment from far away, the Netherlands.
By chance I came to your blog. I am also a Triple to build and I’m obviously very curious how you will carry out further operations.
Possible that we can learn from each other to achieve a good result.
Greetings from the Netherlands.
I would be very pleased to communicate with you about our triple builds.
I have put mine aside for a while, due to other projects,and also because I am not happy with my method of machining the columns.
What stage are you at with your triple?