Still here fellas, just been a bit distracted with lots of things of late.
So, for something that is foundry, but not bike related, I am doing a little project in conjunction with a buddy in Tassie. It is a thing called a “downriggger bomb”. Traditionally these are just lead balls that are dragged along behind a boat at some controlled depth. From these a lure is attached for the fish to bite. Rather than a plain ball, this is a more hydrodynamic shape which will help to reduce the tension on the drag line. These are also available, but of course, one has to think of a “better mouse trap”, which I think we are working on. Gotta say at this point that I know absolutely nothing about fishing, other than that sharks over here like to bite people in half.
Anyways, as part of the new design, we printed one half up to create a pattern. This will be mounted on a mould board and two moulds made, probably in a 50:50 sand & plaster of paris mix. This is possible as both halves will be symmetrical. It will be cast in lead.
Must say that smoothing the 3D print with the spot putty and sanding it smooth is almost theraputic (not that I need therapy, or do I ??). Can see now why Neil makes lots of patterns.
Will be working on the slidingcylinder engine this week, with the goal to get it on an inertia dyno.
Have a good xmas & new year etc.
"Success is the ability to go from one failure to another with no loss of enthusiasm.”
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