Damon Brantley's Blog – October 2017 Archive (2)

Making Angle Gages

While making the bends for the front and rear center spar uprights, I had a problem trying to take measurements with any of the numerous protractors I had. The angles I was trying too measure were to acute for any of my protractors to fit. So I decided to make a set of simple angle gages.

The gages were made using .025 aluminum scraps that I had laying around. The key to setting up the angle is to use a machinist tool called a sine bar. Referring to the picture below, the sine…

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Added by Damon Brantley on October 29, 2017 at 5:54pm — 1 Comment

Making Center Spar Uprights

Fabricating the front and rear uprights for the center spar posed an interesting challenge. Each is about 18 inches long. One has a thickness of .063 inches. Which if that were all I had to deal with, I could bend it in my regular leaf brake and be done one with. However the other pair is 1/8" thick and I think would be a little too much to bend for the leaf brake.

Fortunately I have a hydraulic press and also a 26" press brake to go along with it.The problem with the press…

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Added by Damon Brantley on October 29, 2017 at 2:00pm — No Comments

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