So I delivered a keyboard to a customer yesterday, and when I asked him today how it had been treating him, he mentioned needing a bit more angle. He went with a basic plastic 60% case, so I think stock the thing has a 4 or 5 degree typing position.
It’s not the cheapest option, but I did find a useful dodad for situations like this; some adhesive 3-position feet not too unlike you’d find on a Ducky:
Edit: these are way too big for a keyboard. Bump-ons it is.
I feel like some kind of 3d printed doohicky that can tilt your keyboard (positive or negative) would probably be the best in cost effectiveness; although 3d printed objects are often extremely lacking in durability which might be a concern if a heavy custom keyboard will be typed on it for lengths of time
Ya, I use those aluminum guys on one of my heavy metal keebs. You guys will see that one eventually whenever GMK-Mecha claws its way out of production delays…
I just use one or more layers of foam when I need more angle. Cheap and non-slip. Some come with adhesive but, if not, use double-sided tape. If softer bottom-out is not your preference, use layers of wood or plastic will do.
I’ve used “sorbothane feet” for flat bottom boards before (specifically a stacked acrylic alice and an Orange 75). and I found that they worked pretty well, they even have some give so it can replicate a soft typing feel. The downside is that they are a little bit sticky and pick up stuff that’s on your desk.
Something like this (there are different sizes which should give you a different typing angle):