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Type: Posts; User: RJT

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  1. Replies
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    2,814

    It certainly wouldn't be my choice to try to...

    It certainly wouldn't be my choice to try to categorize my employees skills in this way. I already do those things in a general way, but I can see a lot of problems with trying to justify the...
  2. I think the A is for displaying position of a 4th...

    I think the A is for displaying position of a 4th (rotary) axis if your machine has that option. Nothing to do with Z axis position, That's my guess.
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    596

    2 inch tapered pipe thread?

    2 inch tapered pipe thread?
  4. Replies
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    1,704

    A smaller chuck in a large chuck is pretty...

    A smaller chuck in a large chuck is pretty common. Just beware of spindle speeds exceeding large chuck capacities.
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    1,944

    If at all possible, get training from Gibbscam...

    If at all possible, get training from Gibbscam distributor. Nothing beats training from the manufacturer or distributor.
  6. Quote it both ways and include in the description...

    Quote it both ways and include in the description " previously approved and tested design" for the old design and "new design" for the new one. Seeing both prices with no clear advantage may be what...
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    9
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    1,428

    We use different coolant for chip making and...

    We use different coolant for chip making and grinding. Along the same reasons you mentioned. Clear blue less sticky for grinding, milky white for chip making. Can't recall brand names off the top of...
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    13
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    1,159

    We use both filter paper and magnetic separators...

    We use both filter paper and magnetic separators and both work well. Non magnetic work piece , of course you should go with a paper filter. I would say we prefer the magnetic (less frequent...
  9. Agree with wmpy, that's what we do.

    Agree with wmpy, that's what we do.
  10. Replies
    49
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    4,568

    We grind metering pumps and slide valves from 1/2...

    We grind metering pumps and slide valves from 1/2 to 2" by 5 by 16" hard D-2 and 440C stainless flat and parallel less than .0002" on a regular basis. Change filters and hydraulic oil yearly and...
  11. Replies
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    979

    We have had good luck with our Mits sinker. We...

    We have had good luck with our Mits sinker. We use it for some really fine features (milling electrodes with .005" end mills @ 50k rpm) with features so small , no thru the electrode flush is...
  12. Thread: Helicoil taps

    by RJT
    Replies
    11
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    1,062

    Exactly as Mtndew said. Buy the Heliciol inserts,...

    Exactly as Mtndew said. Buy the Heliciol inserts, but buy better quality STI taps. Other similar inserts haven't always been truly interchangeable, we have had random installation problems with...
  13. Can you keep things concentric enough doing this?...

    Can you keep things concentric enough doing this? What about balance? Is this a common practice?
  14. Replies
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    2,569

    We make a lot of precision shims by stacking...

    We make a lot of precision shims by stacking precision shim stock and wire EDMing the inside and / or outside shape. Absolutely 100% agree with Marcus, slicing off will not get you precision shims....
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    Indicating exiting features on a waterjet

    Easiest example, if you have a flat wide ring (disk) where the ID is finished, and you want to waterjet features concentric to the ID, how do you pick up the finished bore ? A fixture isn't...
  16. Replies
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    2,089

    European standard drive for socket wrenches

    I have a customer that has a European division, they are supplying some sockets they want altered for assembling their product. They are referring to it as a 13mm drive and I'm wondering , do...
  17. Replies
    9
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    1,189

    Thanks, from what I am hearing, it shouldn't be a...

    Thanks, from what I am hearing, it shouldn't be a problem. I'm shocked at the cost of a 5" diameter by 52" piece. Couldn't find any 3 1/2 square so I guess we will have to mill it square. Anyone...
  18. Replies
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    863

    We have a Torit portable vacuum that we use when...

    We have a Torit portable vacuum that we use when machining graphite. Works great and is fairly quiet compared to a shop vac.
    Used 750 cfm Donaldson Torit EasyTrunk Portable Dust Collector | AM16741
  19. Replies
    9
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    1,189

    Monel 500 vs monel 400

    Any significant difference in machining this? We have cut a good amount of 400 , but never any 500. Mostly milling, but there is also some wire EDM work.
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    548

    Ed, How can .968 be clearance for .984 major...

    Ed,
    How can .968 be clearance for .984 major diameter? This is a male 25 mm thread.

    Sent from my moto z3 using Tapatalk
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    548

    That's close, but 25mm is .984 not .969

    That's close, but 25mm is .984 not .969
  22. Replies
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    548

    Measuring an odd thread N 05-32

    I've never seen this and I've been doing this a while (49 years). Print says N 05-32 25mm by 32 TPI. It's not in any standard I can find. Working back through purchasing who has requested it to...
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    2,236

    I agree, a smaller diameter wheel and also a...

    I agree, a smaller diameter wheel and also a slower stroke. Looks like you are grinding in a lathe, so I'm a little suspect of the spindle bearings. The head stock of a cylindrical grinder will have ...
  24. Replies
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    3,537

    An engine hoist would be a lot more stable if you...

    An engine hoist would be a lot more stable if you can use it.
  25. Be specific on your quotes of what is included . ...

    Be specific on your quotes of what is included . Working from sketches is OK , but state tolerances and surface finishes on the quote. Get it IN WRITING, the one who verbally OKs something can get...
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