The classifier is designed to be used with the Gold Slingers Mini Gold Pan but can be used without it. Just set the classifier in the gold pan, fill it with material, shake it around to let smaller materials fall through the 1/4 inch screen (works best with water but can be used dry) then pan material left in pan or use the the Gold Slingers Mini Gold Sluice to run more material quicker. 3D PRINTING SETTINGSI recommend at least 25% infill. No supports required.