Fabricated the remaining "C" channel corner sections.
---------------------------------------------------
Today we completed cutting the "C" channel for the corners. In yesterday's log entry, I did not go into a lot of detail on how we made the corner sections. The following detail should give you an idea of how to induce a curve in an extruded "C" channel.
The ideal way to create a kerf is using a band saw. If a band saw is not available, you can use a high speed cutting wheel or a jig saw. We used a jig saw with a Bosch T118A blade. This blade is designed for metal, and has a 24 tooth-per-inch profile.
The aluminum extrusion is cut into 22" lengths. From the center of the extrusion (11"), reference marks are made at 1-1/2" intervals.
At each mark, a "V" is cut, taking care not to cut the outboard channel leg.
After all of the kerfs have been cut, the "C" channel can be formed to match the desired curve profile.
That's all for today.