[photo-3d] Re: RBT/Spicer mount window differences

[David Motz <david.motz@xxxxxxx>]

David Kesner writes:

>The difference is all but undetectable when an RBT is laid
>over a Spicer. The only way I could tell the difference was to
>punch out one of the Spicer apertures and place it inside of
>the RBT aperture.
>
>Besides, if the Spicer aperture is smaller than the RBT
>aperture it wouldn't matter as the window would be smaller and
>you wouldn't have a violation. If the Spicer aperture is
>larger than the RBT aperture then you wouldn't be able to see
>this when you placed the RBT on the Spicer.

It sounds like you use a different method in transfering chips from the RBT 
jig to the spicer mount than I do.

I always put the chips front side up (emulsion down) on the jig and then 
place a spicer mount on top.  I slip this sandwich into the red button so 
that the jig and chips are behind the mount to preview for window 
adjustments and then tape down.

If memory serves, I believe you also make your jig differently.  I only cut 
out a small notch below each chip big enough to tape the chip down instead 
of cutting off the entire bottom of the jig.  That way I can align the jig 
at the bottom of the spicer against a straight edge, or at the top against 
the fold of the mount.

When I try to place the 5p front spicer cardboard cutout inside my RBT 
mount it only fits very tightly, so I tend to think that my spicer mounts 
probably have a slightly larger window than the RBT.  I guess the way I do 
it I'm seeing a tiny sliver of the RBT jig along each side rather than the 
image, but I've never found this to be a problem.

David



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