Building Circle with Circular Bricks…

We’ve talked about a few circle building techniques. But the most obvious way is, as expected, to use existing circular bricks. You might think that the choices will be limited, but in fact you can do quite a bit with these. Personally I think that brick-built circles are generally good for circles with diameter larger […]

How to Cover Up Polygon Circles

When I gave a presentation on building round shapes a year ago, someone asked me how to cover up the top of the polygon circles. I couldn’t give a good answer at the time. So I’m going to correct that today. First of all, using trigonometry we can deduce that the distance between one end […]

Approximate Circles with Polygons

To continue with our circle building discussion, another way to build circles is to approximate them with polygons. When you have enough sides, polygons look round. For a smaller circle, octagon might be enough. For a larger circle, you probably need a hexadecagon (that’s 16 sided). I’ll focus on octagon and hexadecagon, since 135 and 157.5 degrees […]

Building Curve with Train Tracks

Let’s expend upon the previous post. Curved train tracks are not only good for making circles. They make great curves too, duh. We first start with a curved train track. Then we expend it out on both sides of the track. It’s best to do it on both sides equally for reasons below. When the […]

Round Base Plate with Train Tracks

Lego bricks does not lend themselves to circular objects very well. So trying to build round things out of Lego is always interesting. Today I’m going to tackle this problem from the bottom, literately. Curved train tracks are some of the few pieces with studs not placed on a rectangular grid (even the perfectly circular […]