Re: [photo-3d] Dr. Dave's "Mounting Slides"

["David W. Kesner" <drdave@xxxxxxxxxx>]

Ralph Johnson writes:

> I just re-read this handout and wanted to mention a few things I do
> differently.

This was strictly my way of doing it and there are definitely 
a lot more. Some only slightly different and some quite 
different. You should try all methods and variation and see 
what works best for you.
 
> Supplies:  A 3M tape dispenser for 3" reels holds both 1/4 and 3/8" tapes

Rocky Mountain Memories is now selling a realy nice dispenser 
for this. Check it out at
<http://www.rmm3d.com/supplies/dual-dispenser.html>

> I use a mounting gauge, as I can't adjust the window accurately enough without
> it.  The Reel-3D gauge for 7 perf works for all RBT sizes.

Because I mount to the window I do not use the guage. If you 
mount to infinity or have images with a large paralax then you 
definitely need some way of measuring homologous points. The 
parallel lines of the mounting guage are also helpful in 
correcting rotational errors. I just use the bottom and/or top 
edge of the aperture frame.

> If you need to
> correct for rotational errors, then tape down the chips to the jig with
> westabs.

I would suggest two thing here: 1) use the silver mylar tape 
instead of the tabs and 2) mount directly to the Spicer. The 
RBT jig will do you no good if you have to free float the 
chips to correct rotational errors.

> I place the Spicer mount down on the RBT jig, then lifting up the front edge
> with tweezers; I turn the pair over.  This avoids the film chips falling off
> the pins.

If your chips are falling off the pin bars then it is time to 
replace them. Also, if the pin bars are not tight in the 
channel grooves then it is time to replace.

> I pull out 6" of 3/8" tape, press it down on the tearing bar, hold it tight
> while I align the slide with it and press it.  Then tear off the tape from the
> dispenser, and carefully fold over the tape making sure it is tight at both
> ends.  Lay it down and press the tape tight.  Then cut off the excess length
> with scissors.

This sounds like it works fine for you, but it just adds to 
many more steps for me by having to cut off the tape at each 
end. I just use the RBT jig as a measuring stick to dispense 
the exact size piece of tape. I do get some variances where 
your method would assure the exact length each time.

That's all for now,

David W. Kesner
Boise, Idaho, USA
drdave@xxxxxxxxxx