P3D RE: Mounts and Archives

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

In p3d digest 3211 Mark Hatfield asks about alignment problems 
with Spicer mounts.

I would normally just point Mark to the archives to read my myriad of 
posts, but since he can't get to them I thought I would answer here.

By using an RBT jig you can be assured of precise alignment every 
time. It is easy to use, near fool proof, and cheap (the cost of one 
RBT mount).

Simply cut the bottom off of an RBT mount just below the window 
aperature and in the channel groove that holds the register pin. You 
should end up with a mount that fully frames the film chips but 
exposes the bottom sproket holes.

Place your film chips on the register pins with the face side (non-
emulsion) up and the right film chip on the right side and the left film 
chip on the left side. An easy way to do this is to read the frame 
numbers on the film chip - they should be readable (not backwards) 
and the lower number goes on the right and the higher number 
goes on the left.

Slide the chips together or apart to set the proper stereo window.

Take a Spicer mount and fold it at a 90 degree angle with the front 
side down (that is the smaller window with rounded corners). Turn 
your jig over on the mount with the uncut portion at the top. Slide this 
up against the bent part of the mount and make sure it is centered 
in the mount (left to right).

Tape the exposed edges of each film stip with a piece of silver 
mylar tape beig careful not to move the jig or chips.

Remove the jig, fold the mount and place in a hand viewer for final 
inspection. If ok, tape the mount shut. If not, remove the chips and 
start over.

It should take only a minor amount of manual dexterity and 5-10 rolls 
to become truely proficeint at this. Before long you should be able 
to do a full roll in about 30 minutes.

Any other questions just ask.

That's all for now,

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


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