[photo-3d] Re: Improved mounting with RBT jig

["John Goodman" <jgood@xxxxxxxx>]

Ray Moxom wrote:

> Yes, RBT do have 0.1mm and 0.2mm pin bars. They are grey in
> colour so you will not confuse them with the standard pin
> bars. 

They also seem to be a different plastic: shiny and hard 
(styrene?) where the standard ones are dull and softer 
(polyethylene?). The grey ones routinely seem to fit more sugly 
in the tracks. What I don't understand is how the 0.1mm grey 
ones differ from the standard pinbars supplied with RBT 
mounts, for adjustments. I thought the standard bars provide a 
0.1mm offset, not 0.05mm. Granted they yield plus or minus 
0.05mm from a centerline, but the actual adjustment 
increment is 0.1mm, is it not?    

I was hoping there would be an actual 0.05mm increment 
pinbar, for those times when little details don't quite line up, so 
George's handwritten correspondence from Colin Clay about 
achieving "differences in height from 0 to 0.4mm in 0.05mm 
increments!" sounds particularly interesting.  

John Goodman