How to find Center to End on a 90 degree elbow ASME B16.3-2011
How to find Center to End on a 90 degree elbow ASME B16.3-2011
(OP)
I have a question. What tools do you use to find the center to end dimension on a 1/2" threaded 90 degree mallable iron fitting, and the correct way to obtain the accurate dimension? Can it be done with a dial caliper? Thanks for the advise in advance.





RE: How to find Center to End on a 90 degree elbow ASME B16.3-2011
If you mean measuring in real life; go out to your workshop guys,it not difficult to measure.
Im sure they can help you with this, but I do this usually with a standard flexibel steel rule or piece of measuring tape.
RE: How to find Center to End on a 90 degree elbow ASME B16.3-2011
RE: How to find Center to End on a 90 degree elbow ASME B16.3-2011
... but that's gross overkill, really, and it's still awkward to use with a caliper, unless you add a sliding square leg, but that's really overkill.
A framing square and a tape measure should be sufficient for any reasonable purpose except manufacturer inspection.
Mike Halloran
Pembroke Pines, FL, USA
RE: How to find Center to End on a 90 degree elbow ASME B16.3-2011
I would measure the overall length and the OD of an end and do a bit of simple arithmetic.
If by "center" you mean the center of one of the holes then a bit more measurement and arithmetic is needed to see if the hole is in the middle of the casting.
RE: How to find Center to End on a 90 degree elbow ASME B16.3-2011
RE: How to find Center to End on a 90 degree elbow ASME B16.3-2011
2.) Run the .stl file through some $$software that fixes gaps and orients all the triangle vectors out from the center of the mass.
3.) Go to the $$stereolithography lab and get a part made to check against your real part.
4.) Get two parts made so that you can start a $$six-sigma study of the minute differences between them.
5.) Get a third part made in case you drop one of the other two.
6.) If you drop one of the two, re-start your $$six-sigma study.
7.) Bring it into your cad $$system with an $$.stl translator you paid too much $$ for.
8.) Orient the data to a grid of XYZ planes, and extract the rough profile curves.
9.) Create smoother curves from the rough profile curves.
10.) Construct surfaces using the smoother curves you made.
11.) Trim all surfaces to each other, so that your new model is watertight.
12.) Sew all these surfaces together into a real solid model.
13.) Make a pretty $$cartoon for everybody, using your $$cad system. Use the dimensioning tools. Don't forget to $$tolerance the dimension to four decimal places (six for metric).
14.) $$Print it out on a $$color printer so everybody will marvel at your great work.
15.) $$Publish your $$six-sigma report, and suggest better ways to accomplish this task the next time it needs repeated.
Or use some calipers.
Proud Member of the Reality-Based Community..
To the Toolmaker, your nice little cartoon drawing of your glass looks cool, but your solid model sucks. Do you want me to fix it, or are you going to take all week to get it back to me so I can get some work done?