https://imgur.com/gallery/YtgYnezHey guys -I recently picked up this keyboard on eBay. When it arrived, the switches were so full of grime and dust that it was practically unusable (it almost felt as if the sliders were coated in sandpaper!!) I commenced with the requisite soaking of the keycaps in warm soapy water for a few hours while I opened up each switch to remove whatever was causing them to feel like absolute ****. An entire can of air and ~40 cutips later, and now the keyboard feels and sounds fantastic.
There is one thing that has left me perplexed however...
I have heard only that this keyboard uses thin, dye-sublimated, ABS keycaps, yet, somehow these keycaps have no yellowing (nor any ABS style shine) on them at all while the case has ...not terrible, but considerable yellowing. Is there any way to know for sure if they are PBT or ABS?