How do spiders build webs?

I'm referring to how they make the first link between two distant points, not the web itself. I have two bushes about 150cm apart, and there are other lower plants between. They aren't jumping spiders, so I can rule out launching from one point to the other. I can't see how it could start on one bush (about 2m high), dropping down, walking through the other plants with the line intact, climbing up the other bush, and pulling it tight either. How the hell do they do this? This is a serious question, and whilst I'd be the last one to condemn stupid answers, I would like to know a real answer please! Thanks.

How do spiders build webs?
Most spiders spin a thread as they move around called a dragline. Draglines keep Mr. Spidy from falling. It also enables him to jump, drop or swing safely. A net of sticky threads, thinner than a hair, but very strong, takes Mr. Spidy about an hour to spin his web. They start their web by sending out a thread that floats in the air until it sticks to a branch or leaf. Then more thread that sticks to other branches and also goes from the center to the sides. They keep spinning around and around in circles. Soon after, The flat round web is finished.
Reply:About Spider Webs Here is some info I found!!





Many spiders build geometrically concentric, highly organized silk webs. Some spiders build unorganized webs that look like diaphronous mats, and a few build no webs at all, such as the Trap Door Spider, which spins a web-like "door" over its lair which is a hole in the ground. When unwary prey step on the door, they fall to the spider waiting below.



Spider webs are spun from a special silk created in the abdomen of the spider. The spider uses special legs called spinnerettes to spin the silk into strands. The strands in which the prey become entangled are extremely sticky. The spider also makes thicker strands that are not sticky. These strands are like support beams in a building; they anchor the web, strengthen it so it can resist the struggles of prey and weather events, and they also enable the spider to travel around the web without becoming entangled in the sticky strands.



When a prey insect blunders into the web, it quickly becomes tangled in the sticky strands. Its struggles for freedom alert the very sensitive spider, which travels the non-sticky strands until it can reach the prey. The spider has two kinds of venom: a bite and a sting. The spider bites the prey to temporarily immobilize it. Then the spider quickly spins a silk cocoon around the prey until it is completely enclosed. The cocoon is then suspended in the web until the spider wishes to feed. The venom from the spider's sting liquidizes the prey into a form the spider can consume(a type of pre-digestion).



Life Cycle

Spiders can't fly. After hatching within the silk egg sack, baby spiders of many species emerge from the sack and begin spinning a silk "parachute". This parachute carries them to new locations, where they begin hunting for insects for food. The web builders begin building webs; the trap door spiders build a door over their lairs in the ground; and a few spiders select a place where they hide and then jump upon their prey. Very little is known about how a female attracts a male when it is time to mate. Some spider species (such as the black widow) eat the male after mating is completed. After mating, the female spider spins a silk egg sack within which she deposits eggs. She will die before the eggs hatch.
Reply:They have silk that comes out of them and they move from one branch to another until the web is sturdy enough to hold the wieght of the other side, after that they respin over all the sides and twice respin the middle so it is strudy enough to hold the wieght of the spider along with its prey.
Reply:easy not all spun lines are sticky. These are the ones the spiders moves on. they drag the line across the ground and then climb up to where they want it attached. then they loop it around the anchor point and use sticky line to secure it. then so on... the spider then starts to weave the sticky web which they don't walk on. ever so on they insert a cross line that is not sticky...

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