Built for people new to Topre and EC modification — and rigorous enough for people deep in it. First, understand the switch: the interactive Switch Explorer is the starting point. Then navigate the parts: one place with everything needed to build a custom board without open questions. Then compare domes on a standard: measured weight and Snap % instead of marketing numbers — with the goal of a complete library of every dome made. Secondary to all of it: measured tests of parts and setups, and how they change travel and feel.
The starting point. A working, interactive cross-section that teaches everything about how a Topre & EC switch works — press it, swap sliders, fit silencing rings, watch the dome's skirt hinge and snap through on real measured curves. Built to take a newcomer to fluency, and detailed enough that veterans learn from it too. Every part was measured with a digital micrometer and solid-modeled by hand; the section is traced 1:1 from those models.
learn the switch, interactively → 02The map through the complex world of Topre & EC parts: every part with the details that matter — sources, systems, and the tolerance findings nobody publishes — in one place, so you can spec a custom board without open questions. The builder checks every combination live: stem fit, ring preload, drilling requirements, system conflicts, before you spend a dime.
browse every part & check your build → 03The standard for comparing domes. Every dome is sold as one number; your fingers feel the whole curve. Overlay measured curves for every dome and slider configuration and compare them by Total Energy (how heavy it really is) and Snap % (how tactile) — the standardized read on weight and snappiness, working toward a complete library of every dome. Includes measured tests of parts and setups and how they change travel.
compare measured force curves → 04The practical companion: how to actually perform the modifications the other instruments quantify — silencing, dome swaps, slider work — done properly, in order, without ruining parts.
open the modification guide → 05A library of 29 typing tests recorded in the same sound-treated room, with the same equipment and settings, and zero audio alteration — no EQ, no filters. Every test opens with a Bic Clic pen clicked over the board, so you calibrate your own volume with a pen from your desk drawer and hear the keyboard's true loudness and tone. The only source dedicated to honest, directly comparable tests — between boards, and before/after modification.
hear the real sound →Every force figure comes off a calibrated instrument at 0.005 mm steps, averaged across runs. If it wasn't measured here, it's labeled.
The Explorer's parts were measured with a digital micrometer and solid-modeled in SolidWorks by a professional design drafter with seven years in the trade — then the cross-section was traced 1:1 from those models. Credentials here.
Raw CSVs, the viewer, and the tools live in a public repo. Push a new test set and every tool picks it up automatically.
The force-curve instrument is a build of bluepylons' open-source Open-Switch-Curve-Meter. Sources, patents, and designs are cited, always.