It's even pretty much spelled out in the Guide and in Strike at SG that the Bore must be some kind of a Gateway or conduit (which also can be sealed or rip open completely):
"They [Mierin Co.] had discovered a thin place in the Pattern that appeared to cover an undivided source of the One Power separate from the True Source. [...] It was apparently inaccessible by the means used for the One Power, but they had only to bore a small hole in the Pattern to tap it. Using the One Power, in what was, they hoped, the last time saidin and saidar would be separated, Mierin and the team bored through to the source of the unusual Power emanations. [...] The emanations Mierin and the others had sensed with such hope were his dark energies, trapped just beyond the thin place in the pattern that covered his prison. The hole they cre­ated has been ever after known as the Bore. [...] Like a small finger hole in a prison wall, the Bore was not large enough to allow the Dark One's escape, but it was large enough to allow him to touch the world. "

The "thinness" is just the place through which the Bore was drilled. But the thinness and Bore are not the same, as also this quote makes clear: "The strike was to be carried out at Shayol Ghul, the one place on earth where that 'thinness in the Pattern' makes the Bore detectable."

And now compare this to the description of male Travelling in the Guide:
" A man must use the Power to bore a hole through the Pattern from his loca­tion to the place he wants to be."