Put a dot of hot glue through it, then carefull trim the top with a small exacto knife.
Sounds simple and effective, I'll try that out on one of my test keys. Thanks
I actually did that on my very fist aftermarket set of keycaps. I was so stoked that they didn't look like gamer nonsense but had a badass RED escape key. Can you believe it? RED! Just needed to let that capslock LED shine through.
Anyway, it worked out quite well.
Edit: Here we go. Behold the glory of a dusty Drevo Calibur v1 ca. 2014.
Silicon sealant, like for the edge of windows? It’s clear, but will diffuse the light a bit to make the key glow.
Interesting I'll check that out!
I doubt you'll be able to make something adhere securely long term. if I was to try I would drill holes on the sides only and fill with hot glue. I added hot glue to keys before and it stayed for a fairly long time. Holes on the top will be annoying on the fingertips. There would always be a perceptible difference. And your filler will eventually fall off. if you really wish to pursue the project you will need to investigate the material your keys are made of and what will adhere to it.
You're basiclaly trying to DIY double shot keys. I think it would be really hard to duplicate this without a factory:
I suggest you go on ali express and buy shine-through key of the same profile and compatible texture. You can buy blank keys or modifier keys in small amounts, even one at a time depending. Make sure to get the correct size per your layout.
CA glue may also work, but test it first as it may melt your keycap material
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