Brief Description: Adjusted spar cap angles and drilled
Check the angles on the spar cap angles and made minor adjustments to conform to plans. Tweaked crimped flutes in one outer spar cap angle so that it laid flat on the table. Then I set up the angles flat on the table with the proper gap (5.5mm) for the bottom cap angle in relation to the spar cap, clamped the assembly to the table and drilled holes in the cap angles using the lower spar cap as a holes template. I then repeated the process for the upper spar cap and angles using a .5mm gap between the flange of the angle and the top of the spar cap per the plans. I then deburred all the holes.
After drilling holes in the cap angles I laid out the hole pattern for the center wing ribs, noserib angles, and hat stiffeners. Then center punched the holes with an automatic center punch and then pilot drilled the holes.
Seeing as how I had a little time before I had to head out to see my Dad in the hospital for his recent case of diverticulitis I figured I'd try making a hat stiffener. Did a lot of thinking about it and thought it may be possible using just a bending brake. After making the center bend and having the piece in front of me I first tried the next bend on the small brake but it quickly became apparent that wasn't going to work seeing as how the clamp is flat on the bottom. I figured I'd try it in the larger brake seeing as how that brake's clamp is an inverted L angle and would give room under the clamp. Still didn't seem to doable. I next tried the angle inside a piece of L extrusion and tried clamping it in the vise. That method got the process going so I fidured I may be at the point where I could start working it in the brake again. It sort of worked but the piece was slightly messy looking in the end. Seems like I need some sort of die set up in the vise as a press brake to do the job right. I'll investigate this further tomorrow.
Set up and drilling of cap angles for spar caps
Looks pretty damn straight. Glad I beefed up the big brake to bend the .040 properly.
Nice looking .5mm gap between top of cap angle and top of spar cap. Extends entire length nicely.
