Vol. 64, No. 3 Autumn 2019


266 ship onto them, then carved each of the four pairs of chocks until they conformed to the hull shape. Each


pair is symmetrical, so it was only necessary to fuss with one chock until it was perfect, then make its mate in a mirror image before nailing them to the blocks.


Abandoning my diorama idea meant installing threaded inserts into the hull


for bolts to secure


the ship to the base aſt er the model was nearly fi nished and there was no interior access! I fi rst drilled through the base where the bolts would go, counter-boring the bottom so the bolt heads would not protrude. (Figure 130) I use an old kitchen table as my work table, so I opened it as if installing the leaf. Placing the base across the gap, and the ship onto the base, gave me access from below without rolling the model onto its side. I drilled up through the keel guided by the holes in the base. (Figures 131 and 132) Brad point bits are a must; regular twist drills will chip the fi berglass hull. I epoxied #10-24 threaded inserts into the hull and, aſt er the glue had


cured overnight, Chicoutimi was bolted down onto its base. (Figure 133)


Propeller


My references include propeller plans and a photograph of Sackville’s screw displayed ashore near that vessel. (Figure 134) I could not fi nd an accurate commercial product so, aſt er reading how William Mowll built his HMS T underer propellers (Ships in Scale, XX: 2, 22), I decided to make Chicoutimi’s myself.


I started by turning the hub and shaſt together from a ¾-inch diameter brass rod. (Figure 135) Aſt er parting off , I marked locations for the three blade slots, using my micrometer to take measurements off the plans and the three jaws of the lathe chuck as a


135. Turning the hub and shaſt as one piece, just before parting off .


134. HMCS Sackville’s propeller, displayed at the Maritime Museum of the Atlantic.


136. Cutting the slots for the blades. T e mark on the tool post allows the hub to be rotated to the beginning point of each slot.


137. Cutting for the cowl bolts.


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