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  1. Replies
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    Because they aren't a whole hell of a lot harder...

    Because they aren't a whole hell of a lot harder than the carbide. Think trying to grind concrete with another rock. You might be able to get there eventually but the result won't be pretty and it...
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    Align the shafts properly or the coupling will...

    Align the shafts properly or the coupling will wear out in short order. There will be enough wiggle room in the bolt holes for final alignment but they should be fairly close.
  3. I have run HBMs with the outboard support...

    I have run HBMs with the outboard support countless times. Never for bores that small. Usually 12" diameter plus and 48" length or more. Anything much smaller and you'll likely spend more time...
  4. I'm pretty well in the same boat. I've got a Sony...

    I'm pretty well in the same boat. I've got a Sony LH51 readout for my 14" x 40" lathe but no scales for it. Will have to check out some of these.
  5. The thrust will definitely be the limiting factor...

    The thrust will definitely be the limiting factor if you want to one-shot a larger diameter hole as already mentioned. Large spades need a huge amount of thrust pressure for any decent feedrate. I've...
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    1,770

    Taking the edge off HSS (carbide too) in a...

    Taking the edge off HSS (carbide too) in a controlled manner is something that helps when doing heavy roughing. For finishing with HSS always go for a dead sharp edge. OP is almost certainly running...
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    I think too close on capacity for comfort. You...

    I think too close on capacity for comfort. You should never be running that close to capacity. Did you also take into account the other operation going on simultaneously in your calculation? That...
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    Unless your measurements are off, the B16 would...

    Unless your measurements are off, the B16 would be a sloppy fit. You might be best served making your own adapter.
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    How sure are you on those dimensions? They don't...

    How sure are you on those dimensions? They don't match up with anything near as I can tell. About 0.550" taper per foot or 1:22 ratio, so doesn't match with anything that I'm familiar with.
  10. Replies
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    As already asked, what material and at what...

    As already asked, what material and at what cutting speed are you running the cutter? Looks maybe like it may need more RPM. If you are running large radius inserts get that feed up also. If that...
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    Well as already mentioned the precision level is...

    Well as already mentioned the precision level is only being used to make sure all sections of the machine are the same relative to each other. You could have the machine 3° out from level and stick a...
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    Unless the total deflection due to the weight of...

    Unless the total deflection due to the weight of the machine and steel plate is excessive in terms of sheer amount of sag (did we ever learn what size joists are under the floor?) I would ignore it...
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    If it is for adhesion purposes and there is...

    If it is for adhesion purposes and there is access to a CNC mill, I'd run a thread mill around the hole in effect making a shallow spiral groove and leaving a core of untouched original finish to...
  14. Replies
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    I don't think it's so much the machine tool as it...

    I don't think it's so much the machine tool as it is the fixturing. Between that and always having the fixturing set up and ready to go, a regular machine tool just can't compete on setup time alone....
  15. Replies
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    3,229

    Obviously the HBM is one of the kings of the...

    Obviously the HBM is one of the kings of the machine world. The only problem is they take up a lot of space - vertically also. Not everybody has the space for such a machine. I have a Wells 847 and...
  16. Replies
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    4,031

    It does not need to always be centered. I have...

    It does not need to always be centered. I have run bars above center more times than I can count. On heavier cuts, setting a longer bar on center actually will result in the tool tip running below...
  17. There are a lot of guys here who are also members...

    There are a lot of guys here who are also members there, but you might want to post this at the EEV blog forum, there are more electronics guys over there.
  18. The other consideration of note when spinning up...

    The other consideration of note when spinning up a lathe chuck to higher RPM is whether the chuck jaws are gripping on a rough diameter or a round and on center dimeter. If the diameter is rough and...
  19. Replies
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    Silver plated baffles in the coolant tank? :D

    Silver plated baffles in the coolant tank? :D
  20. Yes, but nobody does that. Well, nobody who isn't...

    Yes, but nobody does that. Well, nobody who isn't mentally incompetent...or who doesn't have old iron disease...:D
  21. Replies
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    Get the speed cranked right up like Rob said....

    Get the speed cranked right up like Rob said. That right there's your problem. After you do that run just a trickle of coolant right at the tip of the cutting tool to prevent the work getting marred...
  22. Something like that will be a pain. My first try...

    Something like that will be a pain. My first try would probably be having her bring them regularly BEFORE they are too dull and rather than have to do remedial sharpening, keep them sharp with some...
  23. Replies
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    Yes, mostly. Part moved to and fro with the...

    Yes, mostly. Part moved to and fro with the table, bar stayed still, far end attached to post bolted to floor and the near end to the head on the rail. Raising the head on the planer raised that end...
  24. I remember the first time this happened to me...

    I remember the first time this happened to me with a 10" scroll 6-jaw. I was finishing a 1/2" diameter at somewhere north of 1000 rpm and when I tried to take the finish cut the workpiece pushed back...
  25. Let's sum it up. Maybe that will help the young...

    Let's sum it up. Maybe that will help the young fella to understand where everyone here is coming from.

    If you are doing large work, run a large chuck and run it slowly - the work requires this...
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