DIY Mandrel Bender

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I got a gear weld on blank and cut the profile of the 5/8 tube in it , using a 5/8 ball end cutter.

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Placed clamp to see how it fits now it's ready for welding

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I tig welded the clamp to the die using stainless steel filler rod

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I put the welded parts back into the milling machine indicated it straight ready for the cut with the ball nose cutter

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I screwed in the opposite side of the clamp to the die in the vice so I can hold it ,so I can machine it with the ball nose cutter

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I tested the clamp on a piece of .625" inch round tube

To make the mandrel I'm using a piece of M8 metric threaded rod , I put two stainless screws on the end of it getting them ready to weld together

After welding together I forged it with a hammer to harden it.

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To bring it to the right size and shape I put the end of the threaded rod into a drill then I sanded it on a disc sander,

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I machined a tube guide from brass

I drilled holes to mount onto a plate

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I made a cut out for the tube clamp and a bored hole that locates the die

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