On 08/01/2017 08:50 PM, Jon Elson wrote:
...snip
All this work for a 1 HP compressor?
I would think the boring bar can make a much straighter and rounder hole
that orbiting with an end mill. Yes, it is more work to keep setting
the cutter diameter.
I have a soft spot for all machines especially the underdogs.
I half expected to get replies like "I do sleeves all the time and we
started helical boring years ago and haven't looked back".
One thing I learned the hard way is that the bore needs a few
thousandths of honing to remove the fractured surface from the boring
cut. In my youth I sent a 327 block to a reputable engine machine shop
and they only did a bore and finish hone. During the break-in the piston
rings gouged the cylinder walls (classic shiny concentric circles) and
pretty much ruined the rebuild.
--
Kirk Wallace
http://www.wallacecompany.com/machine_shop/
http://www.wallacecompany.com/E45/
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