Rotterdam Erasmus Bridge (scale 1:1000)
by mitrasmit, published
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A scale model of one of the most beautiful bridges in the world; the Erasmus Bridge over the Maas river in Rotterdam, the Netherlands.
The model was built up using pictures and my own observation as references; I live a few minutes away and can see the 139m top from my window. It's one of the two most iconic pieces of the Rotterdam skyline, which itself is the most iconic skyline in the country.
A quote from someone in 'rival city' Amsterdam; "The Erasmus Bridge is the only thing in Rotterdam that we are jealous of."
Its dimensions are about 900mm x 140mm, which makes it somewhere around a 1:1000 scale. However, I printed at 120% (the maximum that would fit the height of my printer).
It's actually a real suspended bridge! You lace it yourself with rope. It can support a lot of weight, especially if you anchor the ends of the model.
See the tower part being printed here: https://www.youtube.com/watch?v=TAUWoJLf1UQ
The bridge deck is not level (double curved), so you'll need some support at all the parts. Even though it's all very small, making the deck parts straight did not look good at all.
With the towering part, I suffered from oozing quite a bit. Make sure when using FDM printing techniques that you give the layers enough time to cool off, but print fast - your slicer might have a 'lift head' option, that would probably be useful in this situation (a hairy print is better than an oozed print). I had to do a lot of work to restore it (but did not get it to perfect conditions).
The circle on the ground at the tower part is there to prevent it from building a support tower all the way up to the top, while that really is not necessary for printing. You only need 'touching buildplate' support in that part
To connect the bridge deck together, I used a Dremel tool and some filament to do friction welding (google: filament friction welding). However, glueing will work as well, and might yield better results. Be careful to keep the whole bridge properly balanced, or you will not have all pillars touching the ground.
The connection between the two suspended deck parts broke on my model, as you can see in the pictures where it's next to its big brother (I had to hold it in one hand and ride my bike to the bridge in the other, which is why it gave way).
The string is a kite rope I had lying around, It's difficult to get the tension right, because you want it to look tight, but don't want it to distort the model. Drill out the holes to ensure that you can lace the rope through easily, and think of a way to secure the rope at the ends. Again, I used friction welding to make sure it would be stuck permanently.
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Rotterdam Erasmus Bridge (scale 1:1000) by mitrasmit is licensed under the Creative Commons - Attribution - Share Alike license.
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