Disclaimer: all renders done with Filmic Color Management profile (Filmic Log Encoding Base / Base Contrast). If you use Blender default settings, you might need to adjust material colors/brightness to achieve desired look.
The pack consists of 6 models, named Rails1U..Rails6U plus supplementary objects (underlying plane, two cameras and a light source), that represent standard 19-inch (IEC 60297) rackmount vertical rails typically used in stands, racks and enclosures for mounting professional electronics (server computers, audio/video, telecom equipment etc).
Each model represents a pair of mounting rails positioned at proper standard width.
The whole idea of this pack was to provide a topologically simplest, yet still suitable for close-up renders design with number of predefined materials, ready to use with other properly sized models. The main usage implied fast electronic hardware design prototyping (before you ever get to CAD, you have to get funding, to start with; and this task is typically easier to accomplish, if you have something to show already - that is, convincing images / presentations / videos of a future product) - but of course, it can be used anywhere else where it seems fit.
- width: standard for the industry, Center-to-Center Mounting Hole Dimension: 46.51 cm;
- mounting holes - square, standard size;
- all edges are beveled (no right angles, no absolute sharpness) for better photorealism and close-up looks;
- certain tiny imperfections exist on models to give them more realistic (not absolutely unreal 'computer-made') look at close-up views; however, if you don't see them at your position or zoom level - just forget it :) [it's pretty straightforward to get rid of them, if you absolutely need to, just select those scarce vertices and drag them back to surface];
- all meshes are cleaned up (consistent normals, no doubles, all hulls are closed);
- polygons/vertices count given for the whole pack, so divides per model proportionally to model's size;
- 5 predefined materials included (BrushedBlack, Steel, GlossyDarkBlue, Copper, PaintedBeige);
- all materials are PBR, based on modern Principled shader (thus compatible with other software like Unreal Engine, Renderman etc);
- all metal colors are based on real metal measurements (those in PBR Rendering Encyclopedia, for instance);
- all UV maps (where applicable) are Blender-generated (with 'smart UV project' option), so no manual tuning needed, if you go to exchange materials between models;
A quick tip: while working with your own materials, you might want to switch between smooth and flat shading of faces on bending seams; thanks to the given topology, it's pretty straightforward to border select the whole seam at once to do so.