Some kind of plastic needed

[Musht]

Green will appear brightest, but it`s the least reliable colour and is very sensitive to ESD.

[m_c]

The perspex samples turned up last week, but I've only just got around to setting up a panel to try.


Display Testing by mc_mtb, on Flickr

The Frosted Slate Grey works pretty well, and only becomes illegible when I shine a 670lumen lamp directly at it, so it should be good once positioned suitably out of direct light with a hood.
Only issue with the perspex is you've got to buy it in a complete sheet, which means it works out pretty expensive, especialy since I'll probably only need under quarter of a sheet, so I'm waiting for somebody to drop of some frosted vinyl samples, which I'll try on some clear perspex to see how it compares before making any decisions.

[Musht]

window tint film springs to mind....

[John S]

MC,

Only just got round to reading this thread and I may be able to help.

A few years ago i built a Shumatech DRO system which uses red LED's but in bright light you see all the variation on the led display so a 6 looks a lot like an 8.

Some one posted a link to some red film that once put over the display made it clearer.

As I couldn't get any of this film, it was US sourced I tried using some clear OHP inkjet projection film printed solid red and it worked.

Perhaps given the price of OHP film being low you could experiment with various colours ??

[Musht]

Could try theatre colour filter, gel, not self adhesive though , sandwiching in between 2 layers of clear acrylic works at a push.

[D.C.]

Could try theatre colour filter,

This stuff might work

FILTER GEL SHEET 48 X 21 STAGE LIGHTING VARIOUS COLOURS | eBay

If not you could always try rear projection film, that will definitely work.

[m_c]

I think I may have some OHP sheets around somewhere. I'm currently wondering if a layer of vinyl, then a more opaque frosted perspex would work better, as I've just been doing some searching, and it seems frosted vinyl only comes in light/pale colours.

One goal I want is an anti-glare finish, which is best acheived with a dark satin/matt/frost finish.

[martin54]

Either matt or translucent vinyl would do you, no need for frosted acrylic

[cropwell]

Have you tried sheetplastic.co.uk - they cut to size. You can always phone or email for a price.