Posted by Errin OH on April 16, 2012 at 08:55:57 from (71.79.151.12):
In Reply to: Had a good weekend posted by Errin OH on April 15, 2012 at 20:47:15:
On the back side of an out building I setup a template of the bows by using wood blocks to form the arch. I had planned to splice them together with a short piece of pipe and screws. Where the brace pipes met, I had planned to split the ends, flatten each side, and form to the connecting pipe. Everything would be held together with self tapping screws. It did not turn out they way I wanted it to. Where the splice was on the bow it pulled apart enough to expose corners. The places the pipes met were loose and there was just to much slop and sharp edges on it.
So I moved to plan B. I welded up a 20’ bow (inserted a splice and welded two sticks together) and put it in the jig to form the bow. Another issue I had on the first round was when I pulled the bow out of the jig it would relax a bit and made connecting things up a bit tricky. So on this round I left it in the jig and tacked welded the braces in place. This is a later picture where I had incorporated the blocks for the braces. I used a piece of tin behind the area I was tacking and just tacked the front side. Pull it out of the jig, flip it around, stuff it back in the jig, and tack the back side. Then I could remove it from the jig and everything stayed in place and I just had to finish welding it together. Everywhere I was welding I scrubbed the galvanize off. When done I wire brushed and repainted it with that paint for touching up galvanized metal. This method also ensured that each one was the same.
The two ends are different from the centers. Centers were designed to incorporate the tables for the plants. This way each bow has its own internal bracing and the starts will be off the ground.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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