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  1. R

    Advice on Tapping 3/8-24 hole in 316

    The part was barely warm to touch after drilling. I didn't notice any discoloration until after tapping, at which point it was too hot to touch. newtonsapple, the part appears to be bulging now (after tapping and breaking).
  2. R

    Advice on Tapping 3/8-24 hole in 316

    Definitely over heated when tapping. No issues drilling hole.
  3. R

    Advice on Tapping 3/8-24 hole in 316

    Do you guys think 200RPM was too fast?
  4. R

    Advice on Tapping 3/8-24 hole in 316

    Makes sense. I will stick with 1 pass. If i had to guess where I went sideways it was that I chose a hole size at the min range for form tap and I was aggressive with how far I fed the tap relative to the hole depth. I will correct both and see if results improve.
  5. R

    Advice on Tapping 3/8-24 hole in 316

    Ok. Thanks guys. I will adjust my method and tap and see how it goes. One follow up question, given I am using a compression / tension holder, do I have one shot at tapping or is it possible to tap 1/2 depth, retract, clean tap and hole, and then go for a 2nd pass to full depth? I am...
  6. R

    Advice on Tapping 3/8-24 hole in 316

    Yeah, definitely sounded like it grabbed at the very end. I don't have to use a form tap. Should I consider moving to a cut tap?
  7. R

    Advice on Tapping 3/8-24 hole in 316

    I need to duplicate this piece and am not sure best way to tap the 3/8-24 threads in 316 stainless. Pics attached of what I am trying to make (pic 1835 and 1836). Here are the particulars of what I tried so far. End result was tap broke when program reversed spindle to retract tap. Material...
  8. R

    TL-1 G71 Question

    Ahh. Now I get it. Thanks guys!
  9. R

    TL-1 G71 Question

    Sinha. Double checked tool comp. All is well. Bill, I agree that I need a G42, not G41. But I am still a little fuzzy on how for the profile I have programmed the G41 would result in the diameter of the part to be smaller. As I understand how the comp works, the machine either shifts the...
  10. R

    TL-1 G71 Question

    Hey guys, I ran a simple program using G71 canned cycle on a TL-1, and for some reason when I was done the diameter of the part was 40 thou undersized. Instead of 1.02" it was 0.980". All other dimensions were fine. Here is the section of relevant code. I am focusing on the sign of the U...
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