[WWI] Smash moulding results

[ot 811]

Diego,
The engine is the Monosoupape, not the Salmson - there is a very good photo
in Windsock anniversary edition showing the position of these holes.
Why did I use a punch ?  it gives me much better control - it is easier to
centre,  and the edge of the hole is clean cut. If I use a drill, I would
have to clean up the fraying on the edge of the hole.  Also the plastic is
very thin - it started as 0.015 inch, probably .002 after stretching.
To punch, I first punched a hole in a dark-blue masking tape and stuck it to
the outside, then I placed the piece upside down over a piece of basswood
and I could see  the outline of the hole, so I could position the punch
easily.

On 5/28/07, Diego Fernetti <dfernet0 at rosario.gov.ar> wrote:
>
> Sanjeev!
> > Here are some results, fro my smash moulding efforts.
>
> It looks like your efforts have paid you well. BTW Which was the engine
> that
> this was intended to cover?
>
> >   The openings are punched from the inside with a waldron punch , over a
> > sheet of soft wood, not a die.
>
> How is that? Why not using a drill?
> D.
>
>
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