Three-D Modelling for Railways

There is a square in Prague called the Malostranská quartier, just west of the famous bridge.  On the east side, there is a rather fancy building. Not sure if it has a name; cannot see one on Google maps. Looking at old maps, looks like it was built second half of the eighteenth century - but quite possible this building replaced the original that stood there. I thought it would be an interesting challenge... In particular, those spirals above the roof line, the rooves of the towers and the pantiles. The pantiles actually turned out to be not so hard. I took a cube, subdivided the top in one direction, then arranged the nodes to give a wave. Unlike tiles, pantiles are not staggered, and that makes them much easier to use once you have one of them. Turned out to be too big for my printer, so I have done it 90% of N gauge size, and in low relief.

One of my post popular downloads on Cults3d is my basic office building, available here . Since May/24, it has had 81 downloads, and undoubtedly a major reason for that is that it is free! It was pretty simple to construct, and I am happy to offer things that only take a few hours for free to build interest. I hope one day to go to an exhibition and find it on a layout. It is available in various forms - one or two story, and full or low relief. New Version! I have recently produced a new version, featuring some decorative panels and an art deco style entrance, based on a building in Winkley Street, in Preston (see here ). Also available for free on Cultsd3 ! I have had five downloads already in less than 24 hours.

I created this in response to a challenge, rather than any actual need for one. The basic construction is pretty simple. The base is a flat cube with beveled corners. Everything else is cylinders. For the corners, the cylinders are extended and re-sized to give the right shape. To give it a slightly deflated look, I used a lattice modifier. Available for free on Cults3d .

Blender 5 came out about a week ago, and the noticeable difference for what I do is with the Array modifier. I think it is a big improvement, but there is still an "Array (Legacy)" option if you want to stick with the old (and when opening files made in earlier versions, they will still use the legacy version). The new version has more options, and options that were previously available, but hard to find or do have become much more accessible. For example, you can rotate and scale now. And to support this, the UI has handles on your object. So in this simple example, the basic cube is on the left, and the two generated by the modifier are centre and right. The first copy, in the centre, has handles you can use to move, rotate and scale that instance, and that gets applied to the modifier. The old version has a tickbox so you could turn off relative offset and turn on absolute offset. They have realised no one does both in the same modifier, so now we have radio buttons for th...

At first glance, this is a trivial subject, but in fact there are a lot of options that are not a first apparent. Some more useful than others. We will start with the basics. In Edit mode, click on a vertex to select it. Click elsewhere and it will be deselected. [Shift]-Click on another vertex, and any selected vertex will remain selected, and the new one as well. Note: Most of this applies to edges and faces too. Some of it applies to Object mode too. I do not find there are the same issues in Object mode, as I might only have a couple of dozen objects, while one object might have hundreds of vertices. Toolbar Top left of the toolbar is the select tool. If you click and hold on it, you will see there are four option. Tweak: With Tweak you select each vertex as normal, but can then move it. It is only slightly different to the move tool, and frankly probably only useful for doing minor adjustments to organic models. I have never used it. Select Box: This is the one I use most by a l...

Blender's Array modifier lets you repeat an object any number of times. I only recently discovered this can be in a circle - previously I have done that with Geometry Nodes, which is far more complicated. NOTE: Blender 5 has an alternative methods. See here . In A Line The Array modifier's most obvious use is to repeat an object in a row. You want a row of identical houses? Create one (as a single object!), and add an Array modifier. Want a brick wall? Create two (one staggered above the other), and add two Array modifiers, one in the X direction and one in the Z. You can do this as a "Relative Offset" or a "Constant Offset". With relative offset, the distance between each one is determined by the item size in that direction multiplied by the value. With constant offset the item size does not matter - except that the size transform is applied after the modifier, so it can feel like it does. If you need a specific spacing, constant offset can be better; just ...