I'm not sure, that I would see polycarbonate as an upgrade, really.
Polycarbonate is very resistant to breaking and it doesn't shatter if dropped, but like acryllic it will
build up stress patterns and eventually crack from stress.
It's not at all as rigid as acryllic (unless very thick), a large lid as on the Beogram 4000 would sag and feel cheap as it "flaps around".
It scratches and marres far too easily to be practical for this use in my opinion. You can even dent it if not careful.
It's not particularly resistant towards solvents in cleaning products.
It's also quite costly to produce and work with and it is generally considered to be very slightly toxic. Phosgene and chlorine is used in
production - neither is any good for us or the environment.
Ideally you should wash your hands every time after touching polycarbonate.

Martin

Thank you for your comprehensive answer, Dillen! Any experience when it comes to fit and finish with the aftermarket dust covers?

Beosince98 wrote:

Thank you for your comprehensive answer, Dillen! Any experience when it comes to fit and finish with the aftermarket dust covers?

Frede (classic audio) can provide correct dust cover

Beosince98 wrote:

Thank you for your comprehensive answer, Dillen! Any experience when it comes to fit and finish with the aftermarket dust covers?

I've tried a couple.
FIt and finish varies A LOT.

The original dustcovers are cast in one piece. This is an extremely expensive production method unless you need thousands.
The aftermarket dustcovers I have seen were all glued together from individual pieces, top, sides etc.
The finish of the joints is particularly difficult, because you can see each and every little imperfection, misalignments, bubbles in the glue etc.

Martin

Thank you all very much! It is great to see how the B&O community can help! I have contacted a few shops that specialize on building custom. I will keep you in the loop with what I come up with.

After having taken exact measurements of the dust cover, I realized that the side walls are angled (not this: I I, but this / \). Do you think there is a reason for this, or is it a manufacturing error. I can not see a functional or aesthetic reason for doing so. Also, the measurements of my dust cover are not perfect, of by no more than 1mm, which i guess is a manufacturing error. Also, I am quite certain that the dust cover is glued, and not cast in one piece, as the seams are still very much visible.

Dillen wrote:

Polycarbonate is very resistant to breaking and it doesn't shatter if dropped, but like acryllic it will build up
stress patterns and eventually crack from stress.
It's not at all as rigid as acryllic (unless very thick), a large lid as on the Beogram 4000 would feel cheap as it "flaps around".
It scratches and marres far too easily to be practical for this use in my opinion. You can even dent it if not careful.
It's not particularly resistant towards solvents in cleaning products.
It's also quite costly to produce and work with and it is generally considered to be very slightly toxic. Phosgene and chlorine is used in
production - neither is any good for us or the environment.
Ideally you should wash your hands every time after touching polycarbonate.

Martin

Hi Dillen,

I wonder if the same applies to Beocord covers?

I should collect a Beocord 1200 with original cover and I want to refresh it a little. Is there a way of polish it, clean it and care it?
From the picture I've seen so far, it looks not broken but yellowish/brownish.

Tank you.

Polishing the Acrylic is possible, indeed. However, with my Beogram, the acrylic has become ever so slightly opaque over the years, which is not possible to fix. Also, some hairline cracks have occurred in various areas. 

I should collect a Beocord 1200 with original cover and I want to refresh it a little. Is there a way of polish it, clean it and care it?

From the picture I've seen so far, it looks not broken but yellowish/brownish.link

Check here

link