Checklist
- MX stems, standard height
- 1.75u right Shift plus 1u right column, the standard 75% requirements
- Shine-through legends only if you care about the south-facing RGB; the stock caps are opaque
Sound pairing
The Rainy75's calling card is its deep, marbly stock sound from the gasket-mounted aluminum case. Thick Cherry-profile PBT or the increasingly popular ceramic-style caps push it even deeper; thin ABS brightens it. South-facing sockets mean Cherry profile has no interference issues on this board.
Worth knowing
Because the layout is standard, keycap sets bought for a Keychron Q1, GMMK Pro or any other 75% transfer perfectly. Nothing about the Rainy75's caps is proprietary, including the spacebar.
The two sizes that decide fitment
A standard 75% board can only trip a keycap set in two places: the 1.75u right Shift and the 1u keys along the right column. Modern base kits from mainstream makers cover both, but older sets and some minimalist kits stop at tenkeyless assumptions and ship a 2.75u right Shift only. The check takes a minute: open the kit map image on the listing, confirm a 1.75u right Shift is pictured, and count enough 1u caps for the right column. The bottom row needs no checking; the Rainy75 uses the universal 6.25u spacebar and standard modifier widths, so every full set covers it.
Swapping caps without marking the aluminum
The Rainy75's case makes one practical demand during a swap: keep the puller off the anodizing. Use a wire-style puller, hook it under opposite edges of the cap and pull straight up; on the outer rows, angle the wire away from the case walls so a slip does not drag metal across the finish. Cheap plastic ring pullers are harder on both caps and knuckles and are worth retiring anyway. Photograph the board before you strip it, work row by row, and press new caps on with firm even pressure; the plate supports the switches, so nothing underneath needs bracing.