Tacet 75% Silent Wireless Mechanical Keyboard: Product Design Concept

Most mechanical keyboards are loud enough to annoy everyone in a shared office or on a call. I designed the Tacet to keep the feel of a good mechanical board while cutting the noise to a level nobody notices. It is a 75% layout with 82 keys and a push knob (ANSI), 324 x 138 mm, 18 mm at the front and 29 mm at the back, in a 6063 aluminium case. Silent linear switches (40 gf, 2.0 mm actuation, 3.8 mm travel) sit on a polycarbonate plate floating on 12 silicone gaskets, with PU foam to damp the case. Typing is aimed at 34 dBA at 50 cm with the stock switches. The case is set at 4.6 degrees with sculpted keycap rows from 9 to -7 degrees. Connectivity is Bluetooth 5.3 for three devices plus USB-C wired at 1000 Hz, with a 4,000 mAh battery. There is no backlight on purpose: dye-sublimated PBT legends don't pass light, and an unlit board lasts about four times longer on a charge. What's included: hero and detail renders, a layered exploded view (keycaps, switches, plate, gaskets, PCB, foam and case), four CMF colourways, and a full specification sheet with the reasoning behind each trade-off. Concept project: Tacet is a fictional product. Sound, battery and performance figures are design targets, not test results.