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On my CO2 engine build, I need to bore out the crankcase, flat bottom hole 1.5" in diameter and ~1.75" deep. I have a 3/4" diameter boring bar and a boring head with a ..75" shank. The boring bar necks down to .625" at the cutting edge, and I have a 41/64" drill bit (.64") to drill the pilot hole before boring.
I can do this on the mill, but there is an issue of chips accumulating in the bottom of the hole. So using the lathe would be better. My problem is that my AXA holders won't take the boring bar. So my lathe option is to chuck the boring head in the tailstock and use the tailstock to feed the cutter.
Is there any downside to doing it this way? Neither of the hole's dimensions are critical, although it shouldn't exceed depth by more than .05".
I can also take the block to school and turn it there as the lathes have CXA boring bar holders.
I can do this on the mill, but there is an issue of chips accumulating in the bottom of the hole. So using the lathe would be better. My problem is that my AXA holders won't take the boring bar. So my lathe option is to chuck the boring head in the tailstock and use the tailstock to feed the cutter.
Is there any downside to doing it this way? Neither of the hole's dimensions are critical, although it shouldn't exceed depth by more than .05".
I can also take the block to school and turn it there as the lathes have CXA boring bar holders.