Hoping someone has installed one and I can get some information on purchase and feedback. I've done a bunch of research on youtube and ebay but nothing really sticks out. I'm hoping to get something better that the plain linear scale.
There are a few people that have mounted them on the Smithy. Smithy sells the shooting star 3 axis but they want $700. One guy installed the magnetic type that you can cut to length and he has 3 axis but it only a +/- linear readout. I'm hoping someone with a Smithy and DRO will see this. The Smithy threads don't get read often so I posted here. We'll get there! The aliexpress thing is new to me so there's a start.I really like the import DRO units I installed on my machines. Just the usual stuff, I think it says "Sino" on it... Glass scales, LED display head. It has the usual features like bolt circles/lines multiple tools/offsets etc.. There are seller names for ebay and aliexpress in various threads here.
I don't think we have a lot of Smithy users here, but it looks like there wouldn't be a good way to mount a Z scale. So you would be working with a 2 axis setup. Check lathe DRO install threads, most of those will translate pretty well to the Smithy I would expect.