It's Aluminum Composite Material, thin aluminum on either side of a polyethylene core in much the same way as foamcore is paper on either side of a foam core. It's used increasingly in framing. It accepts spray paint well and the surface is considered archival. If you do a search on The Grumble for ACM you'll find plenty of discussions about it.
Yeah. This or a fabric covered liner might be a simpler option at that scale.Mats that scale can get a little problematic. On option is to use a flat plain moulding profile
with a bevel edge and paint it. Not everybody's thing but can be a lot less work and hassle than
trying to cut a 60" mat. Bear in mind that you have to raise the glass away from the painted surface
as you can get strange optical effects when it touches the glass.
Thank you. I did know about these mats. What I need is a mat for something 70 x 70 or so. Larger than 60 x 60 in both dimensions.Crescent has over-oversized mat boards, limited colors...
C2283 white 60x104
C2289 Antique White 60x104
M900104-4 4ply White 60x104
Really? I can't seem to find that. Do you know who sells it?Rising has 72" x 104" mats in White and Warm White.
Me too, but one of the posters said that Rising makes a 72" X 104", and I figured the best way to confirm is to contact the manufacturer.The OP said he needed larger than 60" on both dimensions. I've never seen any matboard larger than 60x104.
It seems like I was mis-remembering.Me too, but one of the posters said that Rising makes a 72" X 104", and I figured the best way to confirm is to contact the manufacturer.
I just checked their web site and 60" X 104" is the largest size they list.
I think that achieving over 60" in both directions will involve splicing.