Wondering about the reasons for the large price difference between the glass-scale based and the magnetic-scale based units. A 3-axis glass-scale based unit (with read-out) is at least $500 whereas the magnetic scale (look like a digital electronic caliper with the measuring blades removed) could easily be under $100.
I am interested as a home hobbyist (intermittent use), not a production setting. I can't justify the higher cost for the amount of use.
My machines are non-cnc. Will these compensate for the backlash? In other words, will "dead" space (handwheel rotates but the table does not move) also show on the dro or must the table actually move before the indicator registers a change?
What are the shortcomings, compromises etc of the magnetic scale devices?
Are accuracy (or lack of) and repeatability, etc factors?
What makes one brand better than another?
What features are must-have, desirable and eye candy?
Finally, what, if anything, do I need to do differently now that dro's provide the readout?
I am interested as a home hobbyist (intermittent use), not a production setting. I can't justify the higher cost for the amount of use.
My machines are non-cnc. Will these compensate for the backlash? In other words, will "dead" space (handwheel rotates but the table does not move) also show on the dro or must the table actually move before the indicator registers a change?
What are the shortcomings, compromises etc of the magnetic scale devices?
Are accuracy (or lack of) and repeatability, etc factors?
What makes one brand better than another?
What features are must-have, desirable and eye candy?
Finally, what, if anything, do I need to do differently now that dro's provide the readout?