Marble Roller Coaster

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Information about Marble Roller Coaster
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Published on January 16, 2008

Author: Rina

Source: authorstream.com

Marble Roller Coaster:  Marble Roller Coaster First, you’ll need to make lots of track. Drinking straws are what you need.:  First, you’ll need to make lots of track. Drinking straws are what you need. Just cut off the bendy ends… :  Just cut off the bendy ends… Lay them flat on a table, like this - alternately up and down - until you have enough to support another straw, horizontally across. :  Lay them flat on a table, like this - alternately up and down - until you have enough to support another straw, horizontally across. Pop a dab of glue on each vertical straw and stick the horizontal straws down… :  Pop a dab of glue on each vertical straw and stick the horizontal straws down… …which will leave you with something that looks like this. :  …which will leave you with something that looks like this. Pry the two separate sets of glued straws apart… :  Pry the two separate sets of glued straws apart… …and then stick another horizontal straw across the end of each… :  …and then stick another horizontal straw across the end of each… which will leave you with two of these. :  which will leave you with two of these. Next, carefully use a pair of scissors to cut each down into individual pieces of rollercoaster track, like this. :  Next, carefully use a pair of scissors to cut each down into individual pieces of rollercoaster track, like this. You can join the pieces of track by using small pieces of flexible plastic tubing that you can buy from DIY or pet shops. :  You can join the pieces of track by using small pieces of flexible plastic tubing that you can buy from DIY or pet shops. Thread the small pieces into the straws…join them up. :  Thread the small pieces into the straws…join them up. Kebab skewers make great upright supports for the rollercoaster. imply pop the sharp end of a skewer into one of the horizontal supports of each piece of track.:  Kebab skewers make great upright supports for the rollercoaster. imply pop the sharp end of a skewer into one of the horizontal supports of each piece of track. Blobs of modeling clay are perfect for making bases. :  Blobs of modeling clay are perfect for making bases. You can strengthen the upright supports by making them into scaffolds, by glueing smaller pieces of kebab skewer in a triangle formation, like this. :  You can strengthen the upright supports by making them into scaffolds, by glueing smaller pieces of kebab skewer in a triangle formation, like this. Corners are made by bending plastic tubing… :  Corners are made by bending plastic tubing… …but you’ll need to test the run of the marble and tweak the position of the tubing if the marble falls off. :  …but you’ll need to test the run of the marble and tweak the position of the tubing if the marble falls off. You can use extra skewers to prop up the bends to stop the marbles from falling off. :  You can use extra skewers to prop up the bends to stop the marbles from falling off. A steep vertical drop is great for making the marble go fast enough to scale a steep upright immediately afterwards:  A steep vertical drop is great for making the marble go fast enough to scale a steep upright immediately afterwards You might need to reinforce corners with extra tubing and skewers… :  You might need to reinforce corners with extra tubing and skewers… …or barriers, like this one. :  …or barriers, like this one. It’s great fun to make, and to play with. :  It’s great fun to make, and to play with.

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