About this 3D model

UPDATE：A new generation of spring door holder that is integrated onto the door knob and printed in one piece, much easier to use. https://makerworld.com/en/models/202154#profileId-222545 A simple gadget to keep the door open during the printing, prevents the chamber get overheat to affect cooling efficiency of PLA. Compared to the original design, the additional spring structure gives the glass door some space to move, prevents some accidental impacts that may cause damage to the glass or hinges. PETG is recommended.