Re: X axis DRO, my next project
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Aargh!??I meant Z axis, parallel to the bed.??That's what I get for getting involved in a project too late at night, LOL.?
Chris, that's a nice setup you've got there. That looks great for doing extremely precision work. Definitely something to keep in mind but for what I'm doing it would require a lot of install and removal.?
That is why I suggesting using magnets.? ?Buy a $7 digital caliper at .? You can buy magnets but I salvage then from dead computer hard drives and have a good stock of them.? ?BTW the dead hard drives have really nice diecast aluminum chassis that can be cut up and milled to make brackets and whatever.?
It helps to have a 3D printer so you can make spacers and mount brakets.? The cheap PLA plastic really is rigid enough for a use like this.? ? ?
I don't think my DO is "absolute" or that I'd want it to be.? Calipers are absolute, meaning that the meauser relative to dead-zero.? Mine measure from wherever you last pushed the "zero" button.? I think that is what yu want.? You bring the tool incontact with the part, press zero then crank the handle until the DRO says "12.00 mm" or whatever?you need.? ? In machining distance is always relative to some reference face.? ?I would never care to know the distance from the spindle.
For a lathe, I think DRO gives you 99% of what you need.? A milling machine?becomes 1000 times more useful?with CNC but with a lathe, a simple readout is enough.??
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I looked at the iGaging absolute stainless but they're a bit more than I want to spend and I'm not sure there's any advantage to the "absolute" feature on lathe Z axis???They do have an input for a power transformer so that would eliminate batteries.? ?Is there something there I'm not thinking of in regards to the absolute feature?
That's what led me to the Shars ones. A bit more affordable and stainless but I'm not seeing much around the web about them. I'm fairly set on stainless scales as they seem to be less problematic than aluminum even if they are almost 2x the cost.
On Mar 23, 2022, 3:02 PM -0400, Chris Albertson < albertson.chris@...>, wrote:
If you want "simple".? ?You can attach an iGauging" type DRO with magnets.? Glue the magnets to the DRO scale.? ? ? This is not a lot different from placing a magnetic base on a dial indicator.?
On Wed, Mar 23, 2022 at 11:23 AM plumbfishy via <seversonplumbing= [email protected]> wrote: Hi Ryan,
I opted for the "poor mans DRO"on the X axis of my lathe. I made up a simple clamp that allow me to use a 2" dial indicator against the carriage to measure travel. Cheap and easy to install/remove as needed. No batteries to wear out and no electrical interference. Granted, it's only 2" of travel, but it's easily adjusted and seems to be adequate for most jobs I do.
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Chris Albertson
Redondo Beach, California
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Chris Albertson
Redondo Beach, California
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