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Preparation Steps

Note: This guide focuses on the Eiki R series projector…

Test and lubricate projector before disassembly.

  • It's important to find any problems before you start hacking, so run film through the projector and make sure it works well.
  • Lubricate the projector (Plastic parts need synthetic lubricants. Metal-metal gears can use conventional grease. Metal-metal shafts/bearings can use light machine oil or sewing machine oil. Never use common “3 in 1” petroleum oil because it will dry out and seize the mechanism.)

Replace belts if necessary.

  • For the Eiki projector we re-used all belts except for the motor belt.
  • pxl_20240223_204022854.jpgThe Eumig P26 has one belt, which we replaced. We built the amazing “Belt Melt Machine” to connect the ends of bulk 3mm polyurethane belt material:
  • 1) Use “helping hands” to bring a soldering iron in contact with a spare knife blade.
  • 2) Hold the 2 ends of the belt against the hot blade.
  • 3) Slide the belt off the blade and squeeze together as the melted plastic cools.
  • 4) Trim the bumpy ring of melted plastic until the belt is smooth.

Remove unused parts.

(You should probably keep these parts somewhere in case you want to restore the projector to original condition.)

  • power transformer
  • audio amp module
  • motor
  • threading lamp
  • AC input cable and wiring harnesses
  • optionally, remove the loop-formers that were used for auto loading. They mostly just get in the way!

Remove and save these parts that you will re-use later:

  • camtank
  • lamp holder
  • black exciter lamp cover
  • main selector switch
  • sound flywheel (only needed if you plan to use the optical sound features)

Consider drilling holes in projector chassis before you begin

If you do this now, you can prevent metal chips from ruining the electronics that you will install later. (We tried to minimize modifications to the projector chassis by re-using existing holes.)

  • DC input jack
  • Fuse Holder
  • Holes on side for switches and knobs (See User Interface section to decide which holes you need)

Purchase parts from the Bill of Materials ("BOM")

  • Bill of Materials (These are the parts we used in 2023/2024. You may need to substitute or improvise!)

3D print new parts

  • Download the latest STL files from this github repository. The source files are included (openSCAD format) so you can modify any of the models.
    (Here is a mirror of the files as of February 2024:
en/meetings_projects/spectral/mire-wandering/wandering-16mmprojection/construction_guide/preparation.txt · Last modified: 2024/05/14 17:27 by zach