[Kurz]

Quantam Tunneling, I read from a book by Dan Simmons where it centered around Quantam Tunneling. Doing this on the microscale is possible, Though replicating this with an entire object, lets say an apple a bit harder.

Since the apple is only usuable in its normal state, there is a definate chance of the apple just turning out as apple sauce on the other side of the tunnel.

Btw gravity being an issue... As long as you have a structure of small asteroid out in Geo Orbit and you stretch a cable to it, it'll act like a ball at the end of a string. The earth pulling it and spinning it.

Nano Tubes are in theory Really strong. Weakest link is that there is a chance for the nano tube to form incorrect bonds. So we are talking about, perfect engineering of nanotubes needs to be accomplished to make sure it doesnt fall apart.