Non-corroding stripping lifting inserts for precast insulated panels

A method of making a precast insulated panel having an insulating material layer between opposing wythes, comprising the steps of:

• providing a stripping lifting insert, comprising an elongated connecting shaft having a shaft axis, and first and second spaced apart wythe engagement members connected to the shaft in spaced apart relation to each other, each wythe engagement member comprising a hub and a plurality of three or more protrusions connected to and distributed around the hub, each of the protrusions extending radially outward from the shaft axis, wherein the wythe engagement members have a height less than the width of the wythes, whereby each wythe engagement member can be embedded in a respective wythe of the precast insulated panel, and wherein the connecting shaft has a length greater than the width of the precast insulated panel such that a connecting end of the connect shaft will protrude from one of the wythes;
• providing a mold for the precast insulated panel;
• placing a first wythe engagement member into the mold;
• pouring concrete constituting a portion of a first wythe into the mold such that the wythe engagement member is embedded within the concrete of the first wythe and the connecting shaft protrudes from the wythe;
• positioning an insulation material layer over the wythe with the connecting shaft protruding from the insulation material layer;
• positioning a second wythe engagement member onto the connecting shaft;
• pouring concrete constituting a second wythe over the insulation material layer, with a second wythe engagement member embedded within the second wythe, and the connecting shaft protruding from the second wythe, to form a precast insulated panel;
• connecting a lifting device to the elongated connecting shaft protruding from the second wythe, and lifting the precast insulated panel from the mold.