We recommend a 3cfm pump and this chamber: https://www.vevor.com.au/vacuum-pump-c_11109/vevor-2-gallon-vacuum-chamber-upgraded-multipurpose-acrylic-vacuum-degassing-chamber-transparent-vacuum-chamber-for-resin-degassing-silica-gel-degassing-gypsum-degassing-and-vacuum-extraction-p_010700464784
By vevor