FilmGate 2024 version
- Improved with knob to adjust film window with screwdriver.
- Holder phototransistor much more stable
- Protective cover phototransistor does not need to be attached with tape
and has thicker wall at the back some light went through the black plastic before.
If you update from previous Filmgate, it is probably possible to break out FilmGate.stl and UV-Led-attachment.stl and use with the new parts.
The parts FilmGate, Ground ‐ gate, Phototrans‐lower and White ‐ Led ‐ attachment are glued together with Super epoxy or similar, glue part by part and let dry
An Insex screw M6 X 15mm is inserted in the elongated hole. This goes through the plate to the "Filmgate ‐ bolt ‐ bracket" and an M6 nut.
Filmgate is glued together
This is the bottom plate where FilmGate slides sideways. Attach it to the top plate with a few smaller pieces of double-sided tape.
The handle is only pressed down into the hole.
It is important that the FilmGate runs easily and smoothly in the base plate. File edges on both.
FilmGate-guiding.stl are attached with M3 screw from the bottom side and M3 nut on the top side
Phototrans‐upper
Phototrans‐lower
Phototrans-Extra-protection.stl
this is inserted
between the Phototransistor and its connecting pins.
This nut holder is attached under the top plate with strong double-sided adhesive tape or glued with M6 nut in the socket. Placed under Bottom ‐ plate.stl
Here we use the same aluminum foil, to cover the phototransistor. Make a small hole with a sewing needle or something so that there is a hole about 0.3 mm. Now the phototransistor registers only a small part of the film perforation.
Screw M3 x 19mm and spring from a ballpoint pen, used for height adjustment, plug in screw from top then wood on screw below.
This is the lower bracket, for the part that holds the phototransistors. It is an M3 nut that is glued with Super epoxy or similar 2 component glue and then pressed
FilmGate
Try with a film strip that the film runs easily and smoothly, if not file the lower part do not file too much so it is loose in height. Also try with the white starting strip at the beginning of the film may be slightly thicker. When you are happy, take a coarse sandpaper and polish on the film web so it becomes a little smoother.
Normally, such parts are made of metal, but we solve this with thin aluminum foil as used in the kitchen. Apply some glue and then glue on the aluminum foil, cut off excess foil with a sharp knife. The plastic layer on the film will run over the aluminum foil, the emulsion on the film then ends up closest to the camera.
Phototrans‐protection
The phototransistor cover is protected just by pressing it
file a little on the lid if it doesn't fit.