Thread: I'm not self centered chuck
28-07-2010 #11What do the experts think?
If you're using an independently jawed chuck for accuracy you'll need to dial it. One can usually do it by eye to about +/- 20 thou", just using the concentric rings. It should only take a few minutes to get the TIR down to 1 thou or so.
If you only need a rough centre ~0.003" then a self-centring chuck with 3,4 or 6 jaws would make your life a whole lot simpler.
I'd guess your plate Idea would work to say 0.01" (if you're lucky ;)) tightening one jaw can throw the reading off by that much.
I'm with Irving, Bill and Tom :-)
I'm with the missus.
Secondly how are you going to drill a hole in the centre of the 3" long bar without centering it? Also how are you going to make it fit the spindle bore without turning it down accurately - each spindle is slightly different and that would have to be made for your specific spindle.
Thirdly, the accuracy of what you have described using compass and tinsnips is pretty useless in engineering terms, and I think would be incredibly dangerous as the workpiece could easily be 0.5mm offcentre.. i wouldnt want to go near that rotating at any speed with a cutter approaching it....
I'm all for innovation, but sometimes theres a right way of doing something devised over generations of trying alternatives... mainly due to the Darwin effect...
28-07-2010 #17I'm all for innovation, but sometimes theres a right way of doing something devised over generations of trying alternatives... mainly due to the Darwin effect...
Why dont you just say what it is you are trying to bulid and what you want it to do, it seems people are having to try and guess what the question is...
I'm really having a badday here,so I'm not going to answer that.
Really cheesed off I am.
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