This end must be shaped to fit the boiler.
Fig. 5.—Full size.
[Fig. 5 enlarged] (14 kB)
![[Fig. 5 enlarged]](#2320466686113905607_illo365dlg.png.id-2506390048797880011.wrap-0.html.html){kind=link}
We have now to construct ‘side-boxes.’ Take a piece of medium thickness card (a used white postcard), and make it the shape of [Fig. 5]. Where the dotted lines come, cut a little V-shaped groove, not quite through the card, like this:—
. And by bringing the two edges of the groove together, thus,
, you will be enabled to fold the card at right angles at those places without breaking it. Having cut this as required, it must be folded and gummed into shape (put plenty of gum into the joints and corners), and kept in this position on a piece of wood by pins. [Fig. 6] shows its appearance.
