MadModder
Gallery, Projects and General => Project Logs => Topic started by: Old Bill on November 06, 2011, 08:16:45 PM
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I am currently trying to figure out how I'm going to true up some wrist pins for use as a pair of cylindrical squares. They are ALMOST perfect, but not quite. While I've been chipping away at this, one of the things I wished I had was the ability to measure to tenths. And then, it somehow clicked! :Doh:
I have one of these...
(http://i.imgur.com/2xpol.jpg)
And one of these...
(http://i.imgur.com/IODwO.jpg)
And who doesn't have a bunch of these bits of scrapbinium just laying around....
(http://i.imgur.com/DDmnx.jpg)
So the design process began, and it slowly took shape...
(http://i.imgur.com/5IR0V.jpg)
(http://i.imgur.com/1QzHk.jpg)
(http://i.imgur.com/4gneG.jpg)
(http://i.imgur.com/IiWOh.jpg)
Until I wound up with this...
(http://i.imgur.com/2sN0H.jpg)
I secured the vernier so that the gauge indicator read 0 while the vernier was already backed out .1". This allowed me to move both directions to measure. I am able to set the anvil down on the surface plate with a definite 'thunk' that is more felt than heard, and is far more obvious than the carbide tip that came with it. So now I dial up the head to just above the item I want to measure, lock it in place at a convenient number, and subtract how much the vernier dials down.
With that done, I broke out my troublesome wrist pins and proceeded measuring. I did find a low spot in one quadrant of the first one that corresponded with an area that was apparently worn. (It was much more polished than the other quadrants.) And further, I found that I was getting differences between the inside and outside edges. By this point, I ran out of time, but now that I can measure them, I can map them out and come up with a plan of attack for the surface grinder. :dremel:
Next up, an attachment to put my DTI on my height gauge.