[photo-3d] Re: heat seal vs spicer vs rbt

["John Goodman" <jgood@xxxxxxxx>]

Michael Galazin  wrote:

> Yes, I was using a jig with the paper mounts.  I find that
> I'm too picky about good alignment to just slap the chips in
> and seal shut. 

I too was bothered by less than precise transfer and taping 
when trying to hold the Spicer/RBT-jig sandwich together and 
using their edges for alignment. I didn't have the benefit of 
seeing Dr.Dave or Dr.T give a demo, which might have cleared 
up technique details. So I just started using a "float" technique 
that may be less "convenient" but offers perfect freedom to 
make fine alignment adjustments in any direction, and place 
the mount apertures anywhere within the chip pair.

I do the alignment flat on my light table work surface, using 
metal weights to hold the paper mount still and to give enough 
friction to the RBT jig so that it stays in place prior to taping the 
chips down. I can start out with the mount and jig aligned just 
by applying a straightedge, but then I move the jig around 
while checking edge details in the right and left chips with a 
strong Optivisor (head-mounted twin loupe). Particularly with 
reduced height and reduced width mounts, the freedom to crop 
selectively within the entire view is a plus. And with a bit of 
effort, even the tiniest top and bottom edge details can be well-
matched left and right.

John Goodman