HDPE is less expensive. I uses 24"x24" sheets from Grainger (found them to be less expensive than McMaster for plastic sheets) for my coil. Four sheets cost me $160 after shipping. USPlastic has larger sheets for much less per sqare inch, but you're going to probably pay a bit more in shipping.
perl -e 's==UBER?=+y[:-o]}(;->\n{q-yp-y+k}?print:??;-p#)'
Jason Johnson <jasonmsusolar@xxxxxxxxx> wrote:
Polypropylene is another excellent choice.
I find McMaster to be an excellent source for small sized pieces. Not
usually the cheapest, but typically competitive.
http://www.mcmaster.com/#standard-polypropylene-sheets/=qxl3vu
Of course they have UHMW as well, but I think PP is cheaper.
- Jason
On Sun, Mar 2, 2014 at 3:08 PM, Jim Lux <jimlux@xxxxxxxxxxxxx> wrote:
> On 3/2/14 11:42 AM, t-burns14 wrote:
>
>> I have an opportunity to use a CNC milled piece for my base, as seen
>> in one of the Geek Group videos. The milled a spiral into the piece
>> of plastic and then just hammered the tubing into the spiral cutout.
>> I'm wondering what material would be good for that. They might have
>> been using High Density Polyethylene, because I remember them saying
>> it was food grade and polyethylene is used for cutting boards. Any
>> insight? Thanks
>>
>>
> It probably *was* a HDPE cutting board, unless they happened to have a
> source for HDPE scrap. Otherwise, you're buying a 4x8 foot sheet of the
> plastic.
>
> HDPE cutting boards are readily available in a variety of useful sizes,
> and are cheap. There are also polycarbonate cutting boards.
>
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