1. Humidity affects the weight of your bridge. Keep your bridge in a closed container with a few grains of rice. or some silica gel packets. 2. Go easy with the glue bottle. As a general rule of thumb, if you can see it then you are using too much. 3. Keep your hands clean! … Read more
An L-beam is more efficient than a square the same width. It is not going to hold as much, but it is going to be more efficient. An L-beam is also more efficient than a square with the same mass of wood. Of course, you have to count in the glue weight for an L-beam.Balsa, … Read more
Question: What’s your take on the new scoring. Do you think the bridge should just aim at holding 15 kg… or try to build one that’s lighter and hold less possibly getting a higher efficiency score? I used to think that you should go lighter, holding less. But now I think that you should aim … Read more
Many people come to GarrettsBridges looking for advice on building a toothpick bridge. And though I have thought much about it, I have not attempted to build one yet. Here is a father who’s son made a toothpick bridge. He discusses how to design and build a toothpick bridge, and also has good photos. The … Read more
The Bridge Designer is perhaps the greatest online tool for building model bridges. It allows you to design a virtual truss, put a load on in, and it calculates how the forces are spread out. Amazing.