Commonwealth Aircraft Corporation Boomerang Restoration

CAC jig for building both Boomerang main outer wing spars. In the background is a second jig with a partially built outer wing from the main spar back.

CAC jig for assembly of Boomerang outer wing section behind main spar. Port wing built this side, starboard in the jig to left. Wing tip attaches this end at the sloping plate.

CAC jig for manufacturing the Boomerang leading edge of the starboard wing.

CAC jig for drilling off the Boomerang leading edge skins of the port outer wing. The skins are fitted to the lower wooden frame and the top metal frame is fixed down over the skins to pull them tight. The metal frame has drill holes in it that allow pilot rivet holes to be drill through the skins to aid quicker aligning and drilling off to the ribs behind during assembly.

CAC jig for assembling Boomerang rear sections of the wing to the main spar. Assembled rear sections are on the left. The main spar is fitted into the jig on the bottom sloping platform and the rear structure is then mounted on top for attachment.

Boomerang outer wing panels having their attach angles riveted on. These were back riveted from the inside with the bucking bar (dolly) on the head of the rivet outside.

Boomerang outer wing panel having the attach angles riveted on using the reverse method of the bucking bar (dolly) on the inside.

Boomerang port wing being man handled into holding stands. Two small circles at end of wing are the tie down tube protruding out of the wing.

Boomerang port wing in holding stands. Note the bottom skin behind the spar still hasn't been completely fastened down and the excess not cut off at the tip end. This is the last skin to be fitted to a Boomerang wing during construction as its space is used for the majority of riveting of other skins, ribs and along the spar.

Boomerang starboard wing having the cut-out for the cannon hole trimmed off. Note the cannon shrouds sitting on the top of the wing. Wing is upside down.

Boomerang wing having the cannon hole cut-out edges ground. Large casting allowed the fitting of the cannon and supported the percussion spring.