Appendix 1
ABOUT THE MOULDS
Although it is possible to make the stoves without a mould, stoves can be made faster and more accurately
using moulds. The mould ensures that the important dimensions are always the same and correct.
The paddle mould
The paddle mould is made of mild steel. There are three sections:
The base plate
This is a circular plate cut from sheet
steel. It has a minimum thickness of 3
mm with a "stem" of about 20 mm
diameter welded at the centre. Three
counter-sunk holes enable it to be
screwed to a table or bench and three
locating studs enable the mould body
to be accurately located on the base
plate.
The mould body
This is a conical sheet-steel section
measuring a minimum of 1.5 mm in
thickness with a collar welded on the
bottom (minimum of2 mm thick). The
collar has three locating holes so that
the mould body can be accurately
located on the base plate.
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Fig. A1.1 Sections of the paddle mould