cuttergrinder
Hot Rolled
- Joined
- Mar 16, 2007
- Location
- Salem,Ohio
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That job would be much better on a Bullard, a Dynatrol one at that.
done many jobs like that, and while the end turret is doing the I.D.
the side head can be turning the O.D. or facing.
I was getting some chatter in the bore of this bushing so i had to break out my big boring bar
The reason to ask is that two rectangles bolted together have 1/8 the bending stiffness of a solid square of the same outside dimensions.
I know a shop that scrapped a $5000 piece because they were too cheap to make a boring bar.
Good job!
What make is your lathe?
There is talk of us getting a vertical boring machine but right now we dont have one.
Hi Joe,
OP's already stated it's a solid bar, but I'm curious about the "1/8th" statement. I'd agree if they were just stacked together they'd be significantly less stiff, but truly bolted together (not just in the middle) I think they'd be much closer to the solid value.
As well, might even have a damping advantage with the two faces rubbing together helping to convert some vibration into heat. But there might be a geometry drift due to that heat, so perhaps a bit of a gamble.
Great looking NN Monarch
I believe I see a lever for a powered compound as well. Nice feature.
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