Juice Box Pinhole Camera

Step 5 Getting the Film In

Okay, so, thus far, the camera has been missing an important facet: film.
In order to do this, we'll need our film, that empty film canister, the X-Acto, and a bit of patience.

First, cut the "tongue" of the new film off. The tongue is the awkward little flap of film that goes in a bell-curve-ish shape up to where the film expands to its full 35 mm size. Throw that away, or find a better use for it.
Next, pull out approximately 4.5 cm of film, just enough to stretch across the width of the box. Proceed to feed this in between the cardboard backing and the large square that you cut out. (The tweezers might come in handy a little to get the film through at this point.) Make sure you feed the film through so that the matte (dull) side is facing towards the can square and small square. The other side won't expose, it'd be kinda silly to do that.
After you feed the film through, you need to fuse the empty canister of film's small tail of film and the full canister together. Two layers of scotch tape should do this well. Turn the empty canister's spool counter clockwise, which pulls the now conjoined reel taught.

Get out the ol' electrical tape and get it all stuck in place.