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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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Bo-ring....
Hey. (grins)
The scooter's down. She carboned up and ate the piston. I've got the new piston (0.5 mm over) polished and I'm workin' on a fixture. I bought a boring head from Grizzly, then thought, the Super Shop lathe spindle is the mill spindle, so why not faceplate the work and bore true with the ram? So, I had this t-slot plate. I was going to cut it square and clamp it in the four jaw, then mount the jug on it, but four t-nuts cost a bit, so I got a 6 inch plate of cast iron, and I'm going to bore it that 0.5 mm under through, and face it off with a little lip to center the jug, then glue the jug on the plate as it's on the lathe with the reinforced black super glue, the original studs in tapped holes, some spacers, and the old head nuts. Why? It's all about mass. Coupling the 6 inch 3-jaw chuck to the plate to the jug will provide mass, and also the lathe boring bar is sturdier than the mill head boring bar. I can take the belt off and roughly balance it with some pewter bolted on. So, it's a thick disc with a hole through, a mark for lathe chuck jaw number 1, and a lip to catch the existing bore. All glued and bolted up, that lip will disappear on the first or second pass, but it will be concentric and square. And yes, I'll check it, but it's a good setup, I think. Even the honing will be supported by that cast iron plate. Maybe I'll bore it upwards in vertical lathe mode. Oh, crap, I need another codiene; the root canal is kickin in....he'll finish it Monday. We'll know in a week or so. Then it needs porting. The head will get yellow muffler paint, thrice baked, and the water neck, too. I think I might enamel the jug at the Clay Cafe. Yellow with the little glass squiggles that melt in... Would that ruin the iron? I wouldn't think so. Cheers, Douglas (Dana) Goncz Replikon Research Seven Corners, VA 22044-0394 |
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