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The holes in the part were then drill for a clearance hole for the 00-90 screw and countersunk. The part was then attached to the bottom with four 00-90 countersink screws. |
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I made a wooden block so I could hold the crane body in the vise. I then milled out a portion of the roof. I didn't do any measurements. I just eye balled it. |
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Then just like the muffler side, I glued three pieces of styrene to mount the air tank on. |
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I'm waiting for the glue to dry before I trim the edges back. In the mean time I placed the tank on the cutout to see what it will look like. Pretty good I might add. |
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I decided to make the two side plates that hold the winches, boom pulleys and the part of the roof that hinges up out of brass. I scribed a line the length of the plastic piece it is to replace. |
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I was going to cut it with a razor saw but that didn't work to good. So I clamped the brass sheet between two pieces of MD board and cut it with my fret saw. |
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I had cut two pieces, soldered them together and squared them up in the mill. I then sprayed adhesive glue to the brass and attached the plastic side as a template for the holes. |
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And here is the end result, with the original plastic side propped up on the crane for a comparison. The brass makes for a bit more weight on the center of the crane. |
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This picture shows the size of the two motors that will be used for animating both the large hook and boom. |
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On the front the projections that are circled in red need to be removed. |
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The small projection can be removed simply with an Exacto #17 knife. |
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The lager part on the moving part is cut off with a pair of side cutters. |