What comes out exact. A PDF straight from the drawing program is vector, so every line on the plaque is the architect's own line. We leave off the notes, dimension strings and labels (they'd print as blobs) and keep the drawing; hairline hatching goes too. If your sheet says what it was drawn at we read it and tell you the plaque's own scale; if not, you can pick it. A scan or a photo of a print works, traced from its pixels. Every upload is checked by a person before it prints. PLA, two colors, keyhole slots on the back.