Being me I've elected to go about it in a really labour-intensive way!.
The tank on this wagon has a very unusual squashed profile and replicating that is going to be crucial to getting it looking right.
My first step was a scale a drawing to 4mm and cut out a template which I glued onto 15 thou styrene sheet.
I cut that out with scissors them added a strip of styrene around the perimeter before making a rubber mould and casting a copy which was now 60 thou thick.
Then, I ran off a few more castings and half of them here hollowed out.
Four of these hollow ones were them glued together, with filler used to blend out any obvious ridges where they joined.
Now I had a barrel which was around 1.5cm long.
This was used as a master for yet another mould which was also cast from four times.
Rather than try to smooth these over I elected to wrap it in very thin (10 thou) styrene sheet before blending the edges at each end.
So now I have the basic tank shape.
The next stage will be to obtain and adapt a Dundas 3 ton slate waggon chassis.
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