Help for a newbie

Hello! Im new with shap3d and 3d cadding in general. In the screenshot i have a propeller that i recently broke, i have 3d scanned it and imported it in the step format. I have made a new “hub” cone and wanna delete the broken blade and revolve the still intact blade to the other side, can anyone help me complete this task as im right off now stuck at deleting the broken blade. Any other tips trick is greatly appreciated!

Provided the new hub cone is a separate body, subtract it from the propeller step body. Now you should have two separate propellers, one broken and one not. Delete the broken one and rotate-copy the good prop via the center of the hub cone.

If you already made a union of the hub cone and propeller, make a new one and subtract it from the one that was combined with the prop.