I guess it's not it then.
Primer is about two guys who spend their off-time inventing stuff in their garage and inadvertently invent time travel.
The time travel mechanism is really complex and very hard to grasp on the first few viewings
Since you put in stuff in one end of the machine and take it out at the other, your description kind of reminded me of that. On second thought, that's not similar at all.
But the movie is very realistic, has a very unique time travel mechanic and achieved an impressively professional result on the very tight budget of $7000.
Anyway, sorry, can't help with your question
Primer is about two guys who spend their off-time inventing stuff in their garage and inadvertently invent time travel.
The time travel mechanism is really complex and very hard to grasp on the first few viewings
Since you put in stuff in one end of the machine and take it out at the other, your description kind of reminded me of that. On second thought, that's not similar at all.
But the movie is very realistic, has a very unique time travel mechanic and achieved an impressively professional result on the very tight budget of $7000.
Anyway, sorry, can't help with your question