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Type: Posts; User: RJT

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  1. Replies
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    2,031

    Looks like a great deal. I have one I bought new...

    Looks like a great deal. I have one I bought new about the same vintage. I have all manuals and schematics if you need something. I have a newer DRO also, the original crapped out after about 20...
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    727

    I have never used them, but they have quoted a...

    I have never used them, but they have quoted a few things to me. Never got the jobs so, didn't need their services, but seemed knowledgeable and competent. Don't know where you are in Georgia.
    ...
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    2,444

    A couple of thoughts. If you really like your...

    A couple of thoughts. If you really like your present position and feel well compensated and enjoy the challenge of something different all the time, stay where you are. My only question about...
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    What diameters for saw and arbors (to calculate...

    What diameters for saw and arbors (to calculate depth of cut)? Looks like a really handy tool to get close to vise jaws or fixtures.
  5. You will be sacrificing time by interpolating in...

    You will be sacrificing time by interpolating in rapid. May be safer, but it is also slightly slower. Shortest difference, but on long moves it will take longer.
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    54,941

    Find a shop with a EDM drill, easy everyday work.

    Find a shop with a EDM drill, easy everyday work.
  7. Replies
    12
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    606

    Automated cold saw

    Automated cold saw
  8. Replies
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    818

    We do lots of hard turning, and I've never heard...

    We do lots of hard turning, and I've never heard of using wax. Usually only removing a few thousandths after heat treat with ceramic or CBN so we don't use coolant either.
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    947

    Assume you have a cylindrical grinder with ID...

    Assume you have a cylindrical grinder with ID capability, use a CBN quill 3/8 diameter with coolant.

    Sent from my moto z3 using Tapatalk
  10. Replies
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    You mean like this? Corner Rounding End Mills -...

    You mean like this?
    Corner Rounding End Mills - 2 & 4 Flute - Flared
  11. Replies
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    867

    1mm brass tube T on 10 t off 25 ip9 45 volt 13...

    1mm brass tube T on 10 t off 25 ip9 45 volt 13 amp 50% wear
    1.5 mm brass tube T on 15 t off 20 Ip 9 45 volt 15 amp 30% wear
    2mm brass tube T on 30 t off 15 Ip 9 40 volt 19 amp 30% wear

    Out of...
  12. Thread: EDM Cycle time

    by RJT
    Replies
    1
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    371

    To what degree of accuracy , with what kind of...

    To what degree of accuracy , with what kind of sharp corner required, using what material for an electrode, with what kind of surface finish required , can you orbit? Need lots more information.
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    Fillets on turned parts, chamfers on milled...

    Fillets on turned parts, chamfers on milled parts. On your images, fillets could all be milled, but chamfers would be my preference. Milling fillets you have to have lots of different size corner...
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    .005 thick 6061 T-6 sheet source

    Low quantity needed for military, so need certs and can't change alloy. No luck with McMaster, MSC, Alro, Online. Does this exist? .010 thick is the thinnest I could find.
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    409

    We have an EX8 and do it quote often (not me in...

    We have an EX8 and do it quote often (not me in particular, but our sinker EDM guy). As with all EDM flushing is the key, the better the flush the faster / better job you can do. Really no different...
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    Health care renewal rates for ACA

    We are a ten person shop of average health 25 - 50 year olds, in business 36 years. I used to pay 100% of health insurance for employees and their families. Several years ago we had to go to to 75%...
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    1,084

    Grinding in a VMC??? I definitely wouldn't...

    Grinding in a VMC??? I definitely wouldn't recommend it.

    Surface or cylindrical grinder, CBN if you are doing a lot of it. 60J or K if its just a few parts.
  18. Thread: Custom Air Gauge

    by RJT
    Replies
    3
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    462

    The big players are Edmunds, Mahr Federal, and...

    The big players are Edmunds, Mahr Federal, and Western Gage.
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    I missed it, what happened to Gordon?

    I missed it, what happened to Gordon?
  20. Thread: valve tol.

    by RJT
    Replies
    3
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    287

    Centerless won't like the keyway , probably need...

    Centerless won't like the keyway , probably need to do it in a cylindrical either in a chuck or between centers.
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    Not sure I understand the process, but looks to...

    Not sure I understand the process, but looks to me like you need to shield the weld spatter from the gripper. Nothing that soft (plastic) will withstand that heat. I would use ABS or delrin once the...
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    You are 13 years too late.

    You are 13 years too late.
  23. We find very little difference in A-2 , D-2, S-7,...

    We find very little difference in A-2 , D-2, S-7, M2, soft or hard or any alloy of stainless. Most variation is caused by flush conditions, condition of the power contacts, and cable conditions,...
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    We have had Doosan for 10+ years, very good...

    We have had Doosan for 10+ years, very good machines, very few service calls, but we are strict on PM.
    Progressive Tool @ MFG. INC. Greensboro, NC
  25. Better off hiring someone local. If you have...

    Better off hiring someone local. If you have schematics and documentation , your time is probably better spent doing something you are efficient at.
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