Rapid prototype parts in 7mm

Elliot 84A

Western Thunderer
Afternoon gents,

Just thought I'd share this little bit of post Christmas goodies with you. I've CAD modelled a GW King bogie to works drawings and had it 3D wax printed and cast. All in all I'm quite happy with the results seeing as its captured all the detail but it also shows the short comings. What do you guys (and girls) think of the results as I might be a tad over critical.

There is some slight damage on the frames too so try to disregard that :)

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A

Arun

Guest
For a one off L/W casting, wax prints [assuming 100% burn out without ash residue] make sense. But, once you've done it and others like it, they will want some! At some early point it becomes cheaper to produce the same article as a set of parts that can be assembled after being extracted from their moulds. That means redesigning the bogie as a series of parts that can be extracted from a mould.
Fundamentally it is a toss up between one off-mould charges and repeated costs for 3D print material.

Whatever, I think it looks pretty good!

Arun
 
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