Step 3: Create a Welding Jig

This step is about laying out a couple joints of the octagon base on your worktable how you want them to come together, then attaching some scrap wood blocks to the surface around it to force the metal to keep its shape as you weld it.

Why is this necessary? When you weld pieces of metal together, they heat up and cool, shrinking in the process. This leads to some deformation in pieces with either many pieces or many welds. A jig seeks to prevent this by holding the pieces in place while welding, thus reducing deformation. Since this whole thing is supposed to be symmetrical and rest flat on the floor, a wobbly, deformed octagon would just be sad. Thus, use a jig.

Thankfully the base is a regular shape, so you can just make a jig for two joints and rotate the base around between welds. So to make this, draw out how three pieces of the octagon should theoretically join up onto your worktable (or, ideally, on a scrap piece of plywood so you don't later char your worktable while welding) (also, use a ruler/protractor rather than freehand), then lay three pieces on your drawing, fitting them together tightly to test your theoretical drawing. Then screw small wooden blocks around your pieces so that the blocks tightly hold your pieces all together. Make sure to leave room around the joints between pieces so that you can have access to weld. With the blocks securely in place, add two of the struts that fit inside the hexagon and add securing blocks for them. You're done!
&quot;Out of the sarcophagus and back into the saddle.&quot; <br>(and what a cool saddle indeed!!!!!)
That is a fantastic quotation! (And thanks)
great project:D
Great job, well-documented. I bet if you put a light source in the bottom (one that produces very little heat) you could have a nice little conversation piece when not in use, too.
Hey, thanks for the encouragement! I'm looking forward to a non-lurking existence!
Holy smokes! Way to enter in with a bang! Amazing first project! Looking forward to future instructables from you!
LURK NO MORE!!! This is such a cool project, what a great 'ible! I would love to make this for my den or some such application.
ow this would be cool hey seen spidermans

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