Piko A-Gleis ballast HO-scale

I designed these ballast sections primarily for printing in TPU, although they can be printed in any suitable material. TPU is especially useful if your goal is to reduce running noise and vibration.

The ballast surface is intentionally left without a printed texture. In my experience, 3D-printed ballast textures rarely look convincing. Instead, I apply a thin layer of PVA glue and sprinkle real model ballast over the surface. This gives you the precise geometry of a printed base while keeping the much more realistic appearance of real ballast.

The interlocking system may look fairly simple, but it was designed this way for a reason. The locking blocks can be glued directly to the layout, allowing the ballast sections themselves to be removed and reinstalled later without losing their original alignment or track geometry. I find this particularly useful when building dioramas or sections of a layout that may need to be taken apart during construction.

At the moment, the ballast sections do not include track-positioning pins. I intentionally left them out because I find it easier to position the track manually and compensate for small differences in real-world track geometry during installation.

I hope you find these useful and that they make building your layout a little easier.