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Perspex: Sackcloth, ashes and a hair shirt


#1

G’day. My comments on cutting perspex/plastiglass were based
on experience of 20 years ago, when I ruined some expensive
sheets of 1/4" clear perspex using the score-snap method, and on
specialist advice, bought a circular saw designed and made for
the job (it cuts rigid PVC sheet perfectly too)

Having been taken to task over those comments I made
previously, I have just been to my workshop where I have some
spare 1/8 perspex sheet. Using a tile cutter (which has a sharp
tungsten carbide point like a pencil) I scored a piece heavily
three times , then snapped it perfectly over the edge of my
bench! Annoying, eh? Why it was disastrous for me 20 years ago
I really don’t know: I’ve never had any problems in cutting up
to 1/2" glass, even, and have done a lot of cutting 1/4" and
1/8" glass. But there it is; I gave you all a bum steer and am
suitably ashamed. Mea culpa!! And that hair shirt is damned
itchy. Red-faced, johnb.


#2

John,

   Annoying, eh?    Why it was disastrous for me 20 years ago I
really don't know:  I've never had any problems in cutting up
to 1/2" glass, even, and have done a lot of cutting 1/4"  and
1/8" glass.  But there it is; I gave you all a bum steer and
am suitably ashamed.   Mea culpa!! And that hair shirt is
damned itchy. 

I suspect that the material made 20 years ago is not exactly the
same as that which is being made now, so perhaps you were merely
operationg on outdated not necessarily wrong
(It was probably right at the time, in other words.
:wink:

Loren Damewood
http://www.golden-knots.com