[KwartzLab] source of Acrylic sheet for Laser Cutter

[Karl Williams]

Plastic World in Toronto has lots of acrylic but it is a bit of a drive:

http://www.kwartzlab.ca/2010/07/plasticworld/



On 12/22/2011 5:45 PM, doug moen wrote:
> I'm cutting some acrylic next month for a laser cutter project, so I
> did a bit of research on where to get it cheaply.
>
> A-K&  Lippert Plastics at 962 Guelph St is close to Kwartzlab, and
> will sell new acrylic cut to size. But it's expensive: 1/8" is $8.70
> per sq ft, 1/4" is $13.25 per sq ft.  That's $11.34/lb and $8.63 / lb.
>   Available colours: white black blue green orange yellow red amber,
> light&  dark smoked.
>
> KW Surplus sells scrap plastic for $3 / pound. The sheet plastic
> seemed to be all polycarbonate, I didn't see acrylic.  Polycarbonate
> should be avoided.  Although it doesn't contain chlorine, it
> nevertheless releases toxic yellow smoke that gums up the laser,
> requiring extra cleaning. The cut edges are rough and burned looking.
> http://support.ponoko.com/entries/20189761-can-ponoko-cut-polycarbonate-plastic
>
> These guys sell 25 lbs of scrap acrylic for $108 (~ $4.20 per lb).
> That seems like a good deal, unless I was wrong and KW Surplus really
> does have acrylic in the size you need for your project.  "This
> package of acrylic has various coloured sheets. The thickness is
> mostly 1/8" to 1/4 (3-6 mm) and sheet sizes are mostly 2' x 3' (69 x
> 91 cm) and generally masked. This is an econmomical way to buy your
> acrylic."
> http://kidder.ca/assorted-off-cuts-of-acrylic.html
>
> So, my current idea is to do a group buy of 25 lbs of acrylic from Kidder.
>
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