Trevithick Dredger Engine- Supports

by John

IMG_6698.JPG

These are the boiler supports for th Trevithick Dredger Engine, which need a little more finishing.

As you can see my CNC mill is working nicely.  The slow feed rate is because the brass is just super glued to the mounting base and I did not want to risk it coming adrift.

IMG_6696.JPG

The CNC milled parts.  The brass is 7.5mm thick.

IMG_6697.JPG

And this was cut out from the edge silver soldered brass bread slices.

And I have also been working on the 6″ vertical boiler.  The brazing with silver solder is almost finished.  I have been redoing some of the joins, and can now get the pressure up to 200psi.  There are 101 soldered joins in the construction (so far), so I am not too upset that a few of them were not perfect and required a redo.  SWMBO was wondering about the bills from the industrial gas supplier.  I have used several fills of oxygen.  Totally abandoned acetylene and using propane now.  It delivers more heat (at a slightly lower temperature), and much less costly.

IMG_6700