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I have a mag version of a real DRO on my mill:
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And a Shars SPC kit scale on my lathe: Yea, the DRO Pro kit is great. Fast response, great accuracy, but it's limited to the machine's ability, rigidity, etc... The scale kit on the lathe, for what I paid and what it is, is a vast improvement over reading dials. Well worth the effort. I wanted to put another DRO Pro kit on the lathe, and still may, but SPC kit has hit within tolerances on all the jobs I do (i use it for product development/R&D). To test it, I took a piece of 7/8" cold rolled, turned it down to what the scales stated, and sure enough within a mil or so... Using any kind of scale or DRO really just helps to learn the limits of tolerance of what your machine tool is capable of. Honestly, the DRO pro kit on the mill is way overkill for the ability of the machine. The hardware they supply for mounting the reader head is useless on a machine of that size. And for the rigidity of the lathes and mills of this size, holding tolerances becomes more of knowing your machine than how accurate a DRO is. cnc sales wrote: I have some scales like that. |
