Advanced users of Afinia and UP! printers really appreciate the ability to print models without raft and with a base that has a very smooth mirror-like finish. * Borosilicate is a very high temperature glass. It has a melt temperature of about 800¡ã C. * It has a very low thermal expansion coefficient. * Resistant to thermal shock compared to regular glass. * Has an extremely flat surface. * Used instead of perf board on Afinia and UP! printers. * Can be used with purple glue, Kapton tape or Blue Painters Tape (available separately). * Prepare a second plate and quickly switch plates when a model finishes printing. This significantly reduces printer idle time between prints. * Reduces warping, however platform has to be properly leveled as is the case with any platform on a 3D printer. * 5.5" x 5.5" x 0.08" (140mm x 140mm x 3mm). Octave's Borosilicate glass plates are specially manufactured for use as print platforms on Afinia and UP! 3D Printers. The plates have smooth ground edges for safer use and ease of handling.