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How I Built My Fittings
This is certainly not rocket science, but here is how I built my center
section wing attach fittings-
I took templates that I had made to the correct size, and copied them onto 90 LB card stock paper I had. It is thicker than simple copy paper and feels just a little more stout. (1) I then cut them out and glued them to one inch wide .090 4130 steel I purchased from Aircraft Spruce. I used Elmer's glue stick from our office desk drawer. (2) I then cut the ends relatively close with my vertically set Portaband metal cutting band saw (3) I then ground them with my bench grinder. (4) Hand sanding a bit with extra fine emery paper to take out any rough edges, The pictures show the progressive steps. I then primed with ZInc Phosphate primer. |