Thank you.navyrad8r said:Wayne,
i got your back...i am sure the majority of the forum feels the same. As for the original post, i went with the 21st century CONCETRICITY GAUGE. i use a few of john's tools and all of them are top quality! he is very easy to work with and welcomes feedback, especiallywhen it improves his tools.
cheers,
Doc
Killshot said:This guy was being a pedantic **** in another "concentricity" thread back in 2010
and then pops up here with no posts in between?
vern said:Just a really simple question?
Run out or concentricity.......
If a case has run out would it not also be correct to say that the case is NOT concentric?
Stilesstiles said:Killshot said:This guy was being a pedantic **** in another "concentricity" thread back in 2010
and then pops up here with no posts in between?
And what does a pure ad hominem make you?
So really guys if I'm such an idiot answer me a simple question, how can you measure a "center point of an axis" with a single point indicator that rides on the OD? Does anybody have the balls to try to answer this question? Some how I doubt it.
I've noticed a trend here, nobody wants to engage on technical merit (other than mikecr, which I respect even if he doesn't agree with me or I don't' agree with him, I respect him). Personal attacks pretty much rule the day. Wayne's response to my first post in this thread was dismissive, condescending, and basically treated me like a dunce, but he is unwilling or unable to engage on technical merit, just his appeal to some authority as a maintenance man at an ammo factory (I love my maintenance guys at work so don't take that wrong). Of course I'm going to be condescending and arrogant in return, you get what you give. Really why does someone that has a different view, experience and education get such a shitty response, and based on purely technical grounds?
vern said:Just a really simple question?
Run out or concentricity.......
If a case has run out would it not also be correct to say that the case is NOT concentric?
This shows a perfectly concentric part that will show runout.
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So the answer is maybe not!
BTW if you guys notice in that illustration has two opposed indicators, that is for an actual concentricity inspection, with a single point indicator you wouldn't know if it was an out of round condition or a concentricity error.
stiles said:Killshot said:This guy was being a pedantic **** in another "concentricity" thread back in 2010
and then pops up here with no posts in between?
I've noticed a trend here, nobody wants to engage on technical merit (other than mikecr, which I respect even if he doesn't agree with me or I don't' agree with him, I respect him). Personal attacks pretty much rule the day. Wayne's response to my first post in this thread was dismissive, condescending, and basically treated me like a dunce, but he is unwilling or unable to engage on technical merit, just his appeal to some authority as a maintenance man at an ammo factory (I love my maintenance guys at work so don't take that wrong). Of course I'm going to be condescending and arrogant in return, you get what you give. Really why does someone that has a different view, experience and education get such a shitty response, and based on purely technical grounds?
stiles said:I'm unaware of any concentricity gage marketed to handloaders, but there are plenty of TIR gages.
stiles said:mikecr said:The Sinclair is a runout gauge.
The Hornady is a concentricity gauge.
Neither are concentricity gauges <snip>, it takes two diametrically opposed indicators to measure concentricity. If it only has one indicator it is a TIR gauge. The location of your datums doesn't change this fact. Concentricity is only concerned with the median points of the central axis and ignores form errors, that is why it takes two indicators (well in most cases). Oh and concentricity is one of the most useless measurements for the vast majority of parts, TIR is a functionally better measurement.
farmboy said:I don't have much education. I am just trying to get through life the best I can. I was a pretty fair cowboy before I got fat and lazy. I just want to enjoy my simple guns and do the best I can with them. I have learned a fair amount here.
If I want to call it a Concentricity Guage That's what I'm going to call it and I don't care what people think. It does what I want it to.
a lot of these fancy words are kinda nice but can you do anything useful like nurse a sick critter back to health? Maybe solve some money issues so I don't have to support freeloaders?
mikecr said:Without reviewing all this, has someone argued about the precision in our measure?
Seemed to me more a matter of method and terms to describe results.
Personally, .0005" resolution is all I need to see ~1thou or less TIR, and I know this is good enough to remove runout as a performance factor in ammo. If you can achieve this consistently, and maintain it over many reload cycles, then you're doing really good IMO.
I have fiddled with runout measure well below .0001 and found that surface profile of unbuffed brass interfered with reliable measure there.