Michael Kellough said:
.... As far as I can tell white Azek closed cell PVC foam from Home Depot is virtually identical to white Sintra closed cell PVC foam from the sign suppliers. ...
super appreciated Mike.
Yeah Peoria has a home depot and I will look.
Gotta say it aint the mega-sized Depot I was used to in Calumet City, IL.
.
....Back to PVC.
Sintra is a four letter word in this shop.
BIG porosity problems !
When you sand a letter it better not have holes and voids.
On 3/8" and thicker Sintra (trade name) there was voids.
I fought it out with them in their booth at a sign show in Vegas....samples in had!
Got me a credit on my purchase.
photo 1: Sintra .38" cut with the same saw blade as last nights project.
And the Sintra cut was 5 years ago!
As you will quickly figure out there are density differences.
On their thinner stuff the pores were almost non-exist.
.
photo 2: from the project above - NOT sanded ! - just a quality table saw blade and have not changed it in years - the plexiglass was edge dressed on a 12"Ø sander - dirt showing - c'sunk was for #8 not #6 oops
.
photo 3: Samples I can show a customer
.
lastly I am asking myself just what a customer would want PVC sheet for other than a sign substrate?
Why would a home center stock it?
It has no insulating properties.
It is heavy, at least in big sheet form.
The surface scratches easily and would be forever discounted.
It is also pricey.
In the sun it warps easily up to .38"
It is dimensionally stable flat. Unlike wood.