This miter box & saw have been around for centuries. The miter box is accurate & can make good 45* & regular cuts.//// sort of The saw is not so great, recently purchased a finer-grade saw. Using it for a short time it became obvious it would be an upgrade for the miter box. So here is the fix if interested. Seen, the right side has a fence that mounts on both ends. Making same-sized cutes repeatable. Great saw Pep
Nice! Is that a Model Craft Tools saw? It looks like one on their website. Nice fence addition to the miter box, too! Like woodworking, jigs and fences are key to repeatable accuracy. I have a Zona Tool 24 TPI "Deluxe Fine Kerf Razor Saw and Miter Set" that I got at Woodcraft. I haven't used it much for modelling yet, but it does a vey nice job on small woodworking pieces. It is larger than your set, which is not an advantage in most things N scale. But, for the life of me, why do they all cut the three saw slots in the center of the miter box? Cut them towards one end, so the workpiece can have a longer fence to ride against! I don't have equal length table extensions and fence rail on both sides of my table saw!
Going out on a limb. I think what is used for the miter box is some prefab aluminum structural channel. I've not found the slot sizes to be consistent with scale-sized wood or sytrene, but they are close enough to work with. Pep
The miter boxes are designed for woodworking (e.g. intricate trim work). But you may be right, that they picked an available extrusion rather than a custom one. On the other hand, custom extrusions, in volume, are not that expensive. Cut to length, cut the slots, anodize, package, ship. Lots of heat sinks for electronics are just long extrusions, cut to length and drilled as needed.