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Old 07-27-2019, 10:00 PM
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ericnova72 ericnova72 is offline
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Sounds good!

Yeah, any metal pipe sized good enough to fit will do the job...iron, brass, aluminum doesn't matter as the weight of the engine is doing the bulk of the work. The hammer blow is just the upset force that allows the heavy bulk of the engine to do the actual work of forming the dimple. Much more controlled than the dimple you'd get even if you could strike the pipe direct with the hammer

Like bowing a bent shaft in a press, pressing opposite the direction of the bow, then striking the shaft with a large maul to relieve the stress...when you then relieve the pressure from the press the shaft will be straighter.
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