USA Sealing BULK-CS-GFR4-40 G-10/FR-4 Garolite Sheet, 1/32" Height, 12" Width, 12" Length

Bought to use as a nylon 3d printing surface. Was wary after reading reviews, but went for it. It arrived "naked" in a bubble mailer as other reviewers said, with two stickers on it (so Amazon can inventory it). But it was flat, the edges of the sheet were mayyybe damaged 1mm in from the score/snap process, and it was in great shape. A few minor scuffs on the sheet, nothing close to what I'd even call a scratch or gouge. First step with any 3d printing surface is an IPA wipe, so that took care of the sticker goo. Next step with garolite is a scuff-sand with 200 grit sandpaper, so the surface finish as delivered didn't matter anyway. First print on this thing was *awesome*, and I couldn't be happier with it.

I purchased this for use on a 3D printer bed and it works amazingly well. The board holds heat and evenly distributes it without warping. Once the print is complete it pop off without any issues. This sheet is thin enough to mount on a magnetic bed like BuildTak.

The sheet arrived loosely thrown into a huge box (3ft long 2ft wide 1ft tall) nothing covering or protecting the sheet. Edges were roughly cut like someone used a handsaw with all the teeth removed, edges are all delaminating, sheet is scratched like I was run under a brush made of concrete teeth. Only reason I didn’t rate 1 star was because it at least works well enough for my 3D printer.

Product arrived quickly but edges are delaminating as if the manufacturer's cutting tool is dull (my guess for root cause). Luckily, my application for this sheet is smaller than the total area so I can trim the edges. If you are planning to use every square inch of this product you may be disappointed.

I use this when I need a smooth build surface when 3d printing, stays flat, filament adheres well with no glue of any sort, and even extremely sticky PETG pops right off with no fuss.

I purchased for 3d printing and it works better than tempered glass. It arrived with a broken corner but I didn't need the whole piece.

Arrives bare, no wrapper, no coating no cover.What it does have is two stickers on it that you now have to work to remove.(What do they think people buy these for, that we are fine with two wads of adhesive on it?)Mine had plenty of scuff marks and one deep scratch over half the surface.This is the quality I would expect if I dug it out of a scraps & cutoffs bin for a dollar.

This sheet rocks for at least nylon and pet-g. I do recommend sanding it with a rough sandpaper to give texture. Really does work well. Still advise purple glue stick before printing and heated bed.