I picked up an old Buma "AU" 2.2" to 4.2" range boring bar with mike and tools etc last week, sorted out the electricals and got it working, did some test bores with it, sofar so good, after a search on the web only found manuals for the "APM "and "JBM" at lathes uk
This has a 1/4 HP motor what you expect for depth of cut?
so far tried 0.010" and it seems to do that easly with a good bore finsh
so for a +0.020 over bore, a 0.010 cut then 0.007 cut and leave 0.003" for the hone ? or strait to 0.017" cut and remaining 0.003 for the hone ? what do you guys think ?
It has silversoldered carbide tooling and a diamond hone on the back of one of the pullys and jigs for the angles, how often to hone ? a quick touch up every bore ? or when the finish becomes bad ?
if i wished to fit liners how much interferance would be required on the bore
Similar to a Repco or Kwikway/ VanNorman
looking here
"http://bbs.homeshopmachinist.net/showthread.php?t=39959&highlight=cylinder+boring"
its a similar machine with out the stand
would the honing be done in the same stand ?
any thing to watch out for when using it
Any information would be appreciated
This has a 1/4 HP motor what you expect for depth of cut?
so far tried 0.010" and it seems to do that easly with a good bore finsh
so for a +0.020 over bore, a 0.010 cut then 0.007 cut and leave 0.003" for the hone ? or strait to 0.017" cut and remaining 0.003 for the hone ? what do you guys think ?
It has silversoldered carbide tooling and a diamond hone on the back of one of the pullys and jigs for the angles, how often to hone ? a quick touch up every bore ? or when the finish becomes bad ?
if i wished to fit liners how much interferance would be required on the bore
Similar to a Repco or Kwikway/ VanNorman
looking here
"http://bbs.homeshopmachinist.net/showthread.php?t=39959&highlight=cylinder+boring"
its a similar machine with out the stand
would the honing be done in the same stand ?
any thing to watch out for when using it
Any information would be appreciated
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