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Type: Posts; User: BSCustoms

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  1. Replies
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    Did a few hundred cubes of 4140 at 56hrc using...

    Did a few hundred cubes of 4140 at 56hrc using some standard fair grade 5 flutes. Was running 100% axial with 10% radial, 700SFM and .009IPR. Dry with air blast. Had impressive tool life. Its very...
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    The second tool is a Radius turning attachment...

    The second tool is a Radius turning attachment for your lathe. Do a search on here or youtube to see more examples and how to use it.
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    the piranha jaws are fantastic. We use the S**T...

    the piranha jaws are fantastic. We use the S**T out of them at work. prefer them over the talon grips. We kept breaking the Talon teeth even after they switched to S7 to "fix" the issue. The only...
  4. 316 can have some pretty angry bark on it. I...

    316 can have some pretty angry bark on it. I would start with thicker material and/or get your bar stress relieved.
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    sounds like it might just be a little sticky and...

    sounds like it might just be a little sticky and need some instrument oil on the jewels
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    955

    CBN will do beautiful for you. Yes run dry and...

    CBN will do beautiful for you. Yes run dry and follow whichever brand you go withs recommendation.

    PCD is not for carbon based materials as the high heat can actually pull the diamond and...
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    879

    A CBN turning insert will make quick work of the...

    A CBN turning insert will make quick work of the shanks of those drills. I would then do the flats on the grinder real fast.
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    445

    Oh we have no shortage of experience with the...

    Oh we have no shortage of experience with the trak downfalls. They work adequately for my expectations of them. We even get the occasional pause before a finish pass and it will just sit there like...
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    We use our Wire EDM with great success. Pop a...

    We use our Wire EDM with great success. Pop a starter hole from the non abrasive side and bobs your uncle.
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    445

    I never did care for their method of drill set...

    I never did care for their method of drill set up. When I instruct I have students sweep in the tool on centerline then zero so there will be no comp issues. The downside being it wont do the verify...
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    If you can use a center or false center than this...

    If you can use a center or false center than this part is easy. If not you might check out roller box style tools, though not sure if you can get to a square shoulder with them.
  12. Dorian should have metric screws in it...

    Dorian should have metric screws in it...
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    sounds like you may have a piece of something in...

    sounds like you may have a piece of something in the rack if it continues to jump. Open it all the way up and check for any bits.
  14. In theory yes you can go back and forth forever....

    In theory yes you can go back and forth forever. In reality your composition will be changing a little with each heat. Especially if you are using an open atmosphere furnace where you may be losing...
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    This is probably one of the best hobby/vocational...

    This is probably one of the best hobby/vocational lathes you can get stateside before moving up into true toolroom type lathes. I love mine and have used the hell out of it for the last 7 years. I...
  16. Thread: G4 Dwell

    by BSCustoms
    Replies
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    1,379

    If the code is in there the control has to read...

    If the code is in there the control has to read it. Though that seems like a huge difference. Can you take out that variable and try again?
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    We work with very old drawings and this has been...

    We work with very old drawings and this has been my understanding of that tolerance. .005 flatness for any .5x.5 area. maximum of .010 for the full surface.
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    Multi start threads are usually designated as you...

    Multi start threads are usually designated as you stated. Say a Ø.750-16TPI 4 Start( or 4 Lead depending on the draftsman).

    I have not seen the lead specified on a drawing.

    The compound method...
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    I work for the DOD and we too have an issue of...

    I work for the DOD and we too have an issue of even getting enough applicants to interview let alone qualified people that can BE trained. Have yet to find someone that was worth hiring on the spot...
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    The same ballpark rule works for standard....

    The same ballpark rule works for standard. Nominal size minus the pitch gets you pretty darn close. For perfect, consult your machinery's handbook.
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    I would definitely try to anneal the welded area...

    I would definitely try to anneal the welded area as best as possible before stuffing a drill and tap in there.
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    My wife too wanted me to wear a sign of being...

    My wife too wanted me to wear a sign of being locked down when all possible. And since I machine by day and also when I get home, we settled on tattooing it right on my hand. Shouldn't catch on...
  23. Get a hold of your local dealer they may be able...

    Get a hold of your local dealer they may be able to help. If not I can reach out to our guy, he may be willing to track one down.
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    Well our biggest problem is that we are...

    Well our biggest problem is that we are government so getting new things in to "try" is very difficult. especially with hazmat type stuff.

    Some of the reasons the coolant team is pushing the...
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    Coolant reuse/recycle

    Our shop is in the middle of an ongoing significant discussion regarding the use and maintenance of our coolant.

    We are a very large machine shop with every variety of machine tool a shop should...
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