Cutting the notch for the upper plate.
Using the lower plate and clamps to stiffen the part just in case but it cut very nicely. Not quite like aluminium but certainly easier than 4140.
Taping holes in the hinge piece. Kept the holes blind for looks.
Adding the pin holes to the top plate. Holes were drilled and reamed to 0.250" and then drilled 0.850" for the 5/16 threads. Using the remaining piece of 0.250 hole to maintain alignment of the hinge pins.
Adding pivot screw holes to the upper plate. The G0755 is just big enough to thread with the part on edge!
Corner rounding the hinge piece with 0.25 radius tool. Learned from Tom's Techniques that the corner rounding mill cutters like climb milling better than conventional. First time using these cutters but they worked well.
Taping the piviot holes for the lower plate.
Preparing the material for the support slides for the sides of the plate. Wouldn't you know that the only handy material was twice as wide and half again as thick as needed for the part?
Might have been quicker to go out and buy more but too late now.
That's as far as I have progressed to date. I will post more photos as the work gets done.
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