This block slightly props up the top glass of the X1- and P1-series printers to allow venting of the heated build chamber for printing lower-melting point filaments like PLA. Users have had issues with heat soaking and filament melting before the print head, becoming stuck inside of the extruder. This block allows venting of the build chamber when printing PLA without leaving the door open. This still allows the AMS to sit atop the printer.