Return-Path: Received: (qmail 5403 invoked from network); 9 Jan 2001 11:46:35 -0000 Received: from unknown (HELO warrior-inbound.servers.plus.net) (212.159.14.227) by excalibur.plus.net with SMTP; 9 Jan 2001 11:46:35 -0000 Received: (qmail 12631 invoked from network); 9 Jan 2001 11:41:10 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior with SMTP; 9 Jan 2001 11:41:10 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.16 #1) id 14Fx3b-0002rU-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 09 Jan 2001 11:35:15 +0000 Received: from bob.dera.gov.uk ([192.5.29.90]) by post.thorcom.com with esmtp (Exim 3.16 #1) id 14Fx3a-0002rP-00 for rsgb_lf_group@blacksheep.org; Tue, 09 Jan 2001 11:35:14 +0000 X-Priority: 3 X-MSMail-Priority: Normal Received: by bob.dera.gov.uk; (8.8.8/1.3/10May95) id LAA15115; Tue, 9 Jan 2001 11:36:10 GMT Received: (qmail 23373 invoked from network); 9 Jan 2001 12:29:15 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from gauntlet.mail.dera.gov.uk (172.16.9.10) by baton.dera.gov.uk with SMTP; 9 Jan 2001 12:29:15 -0000 Received: by gauntlet.mail.dera.gov.uk; id MAA12828; Tue, 9 Jan 2001 12:21:48 GMT Received: from unknown(10.71.64.31) by gauntlet.mail.dera.gov.uk via smap (3.2) id xma012739; Tue, 9 Jan 01 12:21:30 GMT Received: from frn-gold-1.dera.gov.uk (unverified) by mailguard.dera.gov.uk (Content Technologies SMTPRS 4.1.5) with ESMTP id for ; Tue, 9 Jan 2001 11:37:27 +0000 Received: by frn-gold-1.dera.gov.uk with Internet Mail Service (5.0.1460.8) id ; Tue, 9 Jan 2001 11:34:42 -0000 Message-ID: <65AECDF1F89AD411900400508BFC869F0D74F6@pdw-mail-1.dera.gov.uk> From: "Talbot Andrew" To: rsgb_lf_group@blacksheep.org Subject: LF: Bonfires and polycarbonate sheet Date: Tue, 9 Jan 2001 11:34:45 -0000 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.0.1460.8) Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: I made some tests on polycarbonate sheet in fires and EM fields last night. The material tested is called "COROTHERM" and as mentioned earlier, is available from most DIY outlets Burn test - Does not support self combustion. When held in a gas jet just melts and gives off sooty smoke with a small luminous flame, turning to carbon. No noxious fumes are given off, unlike other plastic materials. When removed from flame self extinguishes immediately. I believe this is a requirement of many building materials now. EM fields - Placed a 100 x 200mm piece in a microwave cooker (with the statutary cup of water to protect the cooker !) The test piece didn't even get warm after several minutes of 'cooking'. Paxolin or SRBP sheet, in comparison, gets very hot with this same treatment. On memory alone, a 2.4m long by 0.6m piece of double walled 10mm thick sheet costs around £25 - 30 (UKP) from B&Q. Looks ideal for ATU huts, and even formers for large coils. One side is ultraviolet protected so when using outdoors it has to be mounted the right way round; the peel off protective film labels which side is which.. Andy G4JNT -- The Information contained in this E-Mail and any subsequent correspondence is private and is intended solely for the intended recipient(s). For those other than the recipient any disclosure, copying, distribution,o r any action taken or omitted to be taken in reliance on such information is prohibited and may be unlawful.