What are you going to use to run the indicator up and down the rod?  If it is a 
reasonably well made height gage you should be fine.

N. Christopher Perry

> On Aug 18, 2015, at 8:32 AM, Gene Heskett <[email protected]> wrote:
> 
> Greetings all;
> 
> I am getting an artifact in my carving such that when the mating pieces 
> are turned around and the joints meshed, indicates the head may be 
> tilted a fraction of a degree.  The indicator pointers location prevents 
> it from being viewed headon because you can't see thru the quill, so 
> some parallax error is possible.  It is also possible the tool is 
> flexing as its currently moving at 50 IPM cutting about .225" deep per 
> pass, so the chips from an all climb cut are decent sized.  And its a 
> used mill, having cut some alu in its history.  It was a handy bit in 
> reach at the time. 
> 
> I do not have a dial holder that would hold a .0001" dial indicator in 
> the spindle for a rotational check to see if its dead perpendicular to 
> the table AND the table currently has the work holding jig/pallet 
> mounted and in the way of accessing the tabletop.  Its just clamped, but 
> I think I'd glue a T-groove fitting stick to each end of it so it 
> becomes keyed to the table before I'd remove it.
> 
> As a method to show grosser errors, I am thinking of chucking up an 8" 
> section of A2 rod, verifying any runout, and dialing the side of that as 
> I run it up & down the post.
> 
> Would this be a suitable method of checking the alignment ("tramming") 
> between the post and the axis of a mounted tool?
> 
> Thanks all.
> 
> Cheers, Gene Heskett
> -- 
> "There are four boxes to be used in defense of liberty:
> soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> Genes Web page <http://geneslinuxbox.net:6309/gene>
> 
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