On Sat, 9 Mar 2002 at 20:22:39, Al Feng wrote: (ref: <[EMAIL PROTECTED]>)
>On Fri, 8 Mar 2002 15:33:24 +0000 Tony Firshman ><[EMAIL PROTECTED]> writes: >> On Fri, 8 Mar 2002 at 06:20:22, Al Feng wrote: >> (ref: <[EMAIL PROTECTED]>) >> >> >EVERYONE! >> > >> >Speculation about the material used in the QL's membranes by >> Sinclair >> >or otherwise seems futile. > ><snip> > >> Nope. As I said earlier in this thread, Sinclair used a good clear >> plastic for earlier machines, and this is 100% OK. I know this 'cos >> I >> have a few and seem to last for ever and are showing no sign at all >> of >> failing. > >AND, no offense, Tony, this is the first time I have ever heard anything >about a more durable material in presumably-prototype, 1984 units ... why >wasn't this told to whomever it might have concerned when the last batch >of post-SRL membranes was being cobbled up? SRL? We tried to get the manufacturers to change the spec, but they said they would only work to the specs they had. I wonder who made the good ones. > >Regardless, "pure" vinyl, or materials approaching same [as the standard >QL membranes APPEAR to be] are by their nature more likely to degrade >than a polyvinyl -- yup, that's why chemists came up with them. ... but the ones I have are approaching 20 years old, and show no signs of any problems. How long do you want (8-)# -- QBBS (QL fido BBS 2:252/67) +44(0)1442-828255 <1stname>@<surname>,demon.co.uk http://www.firshman.demon.co.uk Voice: +44(0)1442-828254 Fax: +44(0)1442-828255 TF Services, 29 Longfield Road, TRING, Herts, HP23 4DG
