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Step 6The Alternate Method
The other option for this step is much simpler.
Drill and tap two holes in the jig base and thread in bolts from the bottom. When used with a couple of welder's magnet, this will hold the tube in place for tacking.
In this case, just fine-tune the height of your bolts to get the tube parallel to the jig base and the bottom bracket face.
As in the previous step, the clamp on the bottom bracket is not shown.
Drill and tap two holes in the jig base and thread in bolts from the bottom. When used with a couple of welder's magnet, this will hold the tube in place for tacking.
In this case, just fine-tune the height of your bolts to get the tube parallel to the jig base and the bottom bracket face.
As in the previous step, the clamp on the bottom bracket is not shown.
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