YOUSU PP Printing Surface for 3D Printer 200x200mm, Polypropylene Sheet Building Film, Easy to Install and Remove, 20pcs Pack

The filament I used with this is Fiberlogy 'graphite' polypropylene. I tried packing tape, adjusting settings, even sealing all gaps in my enclosure - nothing worked as well as applying this film to my smooth print bed. My only caveat is that it works TOO well, and the part does not come off of the film after printing. Attempting removal peels off the top polypropylene layer of the sacrificial film, which does not separate from the part. My suggestion is to use a raft or first layer of some sort. I wish it were possible to use the film multiple times, but at least it comes with twenty of them. You can always cut them to a smaller size as necessary. The film comes off of the bed easily with little to no residue left behind. Application is moderately easy, but requires some technique to apply without bubbles. Printed a relatively large part (4") over four hours, and it completed the full print whereas previous techniques failed at the 1-2hour mark. I did notice minor lift of the film near the edges of the part, but I do not see any warping within the part itself.

Works like a charm.