Tuesday, October 20, 2015

New Folded Bass Horn - More Progress On Second Horn 3

The next step is to cut out a matching pair of rectangular panels to form the sides of the third chamber.  But first, it is necessary to fit the second chamber side extensions.  Using a handsaw, the edges of the cover on the first chamber are cut away to provide a landing for the second chamber side extensions.

Trimming First Chamber Side Edges
Trimming First Chamber Side Edges
Next, one of the extensions is fitted in place while fastener holes are drilled.

Second Chamber Side Extensions
Second Chamber Side Extensions
With the extension fastened in place, the first side for the third chamber can be held in place with clamps while drilling and countersinking for fasteners.

Side For Third Chamber Clamped In Place
Side For Third Chamber Clamped In Place
 It is important to get each of the side panels centered so that the twin halves of the third chamber will be of equal dimensions.   After one side panel is fastened, the alignment of the second side panel can be checked with a square.
Third Chamber Side Panels Aligned
Third Chamber Side Panels Aligned
 With the third chamber side panels glued and fastened, it is possible to install the covers for the third chamber.  No glue is used for this step, only fasteners.

Third Chamber Covers Fastened But Not Glued
Third Chamber Covers Fastened But Not Glued

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