Thanks. As I expected then. I'm using Plexi not Lexan. I also found that paint/laquer thinner will damage a Lexan as it's polycarbonate. Plexi will not be affected unless the thinner was designed for acrylic paints... Plexi is the right choice for an etch-tank :-) KreAture ----- Original Message ----- From: "jim barchuk" To: Sent: Thursday, April 03, 2003 11:15 AM Subject: Re: [EE]: Found a great heater for etch-tank! > Hi Kyrre! > > On Thu, 3 Apr 2003, Kyrre Aalerud wrote: > > > From: "Alex Holden" > > > > Are you sure it's Lexan (ie. polycarbonate) and not acrylic (PMMA/methyl > > > methacrylate, sold under the trade names Perspex and Plexiglas)? They > > > look similar but polycarbonate is tougher and more expensive than > > > acrylic. > > > Hmm, I hope it's plexi and not lexan as it would bond better, but this > > stuff is very though. Is there a way to tell them apart except for who > > can withstand the most beating? > > Some common physical differences, I'm sure there are various more specific > flavors of each type but these are some general observations. > > Lexan is tougher but Plexi is harder. Lexan is a tad 'softer.' Lexan you > should be able to nick with a fingernail, Plexi you shouldn't, or with far > more difficulty. > > Plexigalss is far less flexible, Lexan, a 0.25" thk 12"x12" sheet can be > deflected quite easily. > > The edge of Plexi, cut with a knife by hand, may tend to > fracture/flake/chip a bit. Lexan, softer, should carve off nice smooth > pieces. > > Given those characteristics Plexi will stand up to handling with less > -surface- cosmetic damage, Lexan is more fragile that way. But softer, > absorbing energy, Lexan can take more pure abuse. I've heard mention that > stock car windshields are Lexan, Plexi would probably simply > explode/shatter under those conditions. > > Have a :) day! > > jb > > -- > jim barchuk > jb@jbarchuk.com > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics > -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics