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  • Users: doohicky
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  1. doohicky

    Testing for silicone.

    Could somebody point me to a lab that could test for silicone contamination in CNC machine coolant? Thank you Mike
  2. doohicky

    NPT thread information

    Can anybody tell me, point me to a website, or publication that explains the mechanics of how a NPT thread is supposed to work, and possibly have some troubleshooting? I am familiar with ANSI B1.20.1, but need something that would explain the engagement that is supposed to occur. In a perfect...
  3. doohicky

    Roundness of NPT threads???

    We seem to be having an issue with the roundness of a run of the mill 2" NPT plug. Is there anything specifically called out for in the standard that controls this? Thanks for the help. Mike
  4. doohicky

    Weld bead callout on a print

    If I have a .06" callout for a weld on a print, how would that be measured? I have an idea, but....... Thanks for the help. Mike
  5. doohicky

    NPT Gaging question.

    Is there anybody that deals with castings and can answer me a question on the proper use of a NPT ring gage on a pipe plug? I know that when gaging pipe, flush would be the end of the pipe(according to B1.20.1), but would the same hold true for a plug? The cast plug does in fact have a cast in...
  6. doohicky

    Surface Finish question

    Would anybody be able to tell me what the prescribed parameter of measurement of surface finish is to be used? I know that it used to be RMS, but was changed to Ra in 1995, is this still the method in use today for evaluating your standard metal machining finishes? Thanks for the help Mike

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