[3D printed parts] MG SAZABI knapsack+thruster parts -airliftIt takes about 2 3 weeks for 3D printed parts to be shipped. 3D printed items cannot be returned or cancelled. The red wax parts have already been thoroughly cleaned twice with alcohol and an ultrasonic cleaner before shipping. Upon receipt, no additional cleaning is required you can sand as needed and proceed directly to painting. Important for printed parts: Never soak in water! Never oven dry! This is a universal precaution for all printed parts