How to create Illuminated Lettering ?

[JezUK]

Can anyone give guidance on how to create this kind of glass / lettering or symbols please ?

[Morne]

Fake it with VRayLightmtl and opacity for the graphic. Stick that half a mm in front of the glass/perspex panel. Can also cheat the edges of the panel like that.

Or you could use a normal glass and in the refraction part, add a mask in the glossy for the graphic. This approach may look better but take longer to render (only add the glossy map to one side of the panel, not both)

[king_max]

Blend material with base glass/plexi + lightmaterial logo on top using the logo shape as mask. You can use a MatID channel in the logo material and render out a MultiMatteElement pass of that (mask) and add the glow in post production. As for the illuminated inner glass borders, it would be quite difficult to achieve that directly in max. I would add a different material ID to the border faces (using the same glass as for the rest), thus rendering an additional MultiMatteElement out of that and add the glow/light effect in post.