Cherry MX "Butter Browns"
Sold in packs of 10, minimum order is 30 switches (3 packs of 10). Orders with less than this will be cancelled according to the return policy.
Cherry MX Butter Browns are a 5-pin MX Brown Hyperglide (Q3 2021 Batches) that has been mechanically actuated 640,000+ times to 'break in' the switch and increase the smoothness. The POM sliding on the nylon simulates years of use, creating a smoother feel just like the vintage switches we all desire - without the dust, desoldering, ultrasonic cleaning, spring swapping, and thrift shopping.
205g0 or 3203 - both work just fine for these. These tactiles benefit shine with a light coat of lube Give the whole stem (not the legs though!) a nice light coat, and that's it. I also recommend a spring swap and oiling, as the stock springs are rather crunchy and overall not so good. 58g or 60g Supreme are as close to stock as you'll get.
To top it off, some thick films prevent any housing wobble in Cherry switches.
My personal TGR Jane V2 CE build uses 205g0 lubed Butter Browns with films and 60g Supreme springs.
I custom designed the machinery for this, and as a mechanical engineer you have my word that these switches are being broken in on precision machines, and not some silly "rock taped to a fan" device. This helps keep the stresses on the leaves to a minimum, as the pressing is no harsher than your fingers. The machine also introduces extremely slight oblique presses, as we never have perfectly centered and straight down presses when we type. This helps to wear the switches evenly and effectively.
Sales on worked in switches are final, as this is a product with a service rendered upon it.