Abstract: An expandable cabinet allows for the storing and positioning of electrical component boxes of different lengths. One or more expansion brackets are capable of being secured by one or more brace guides at fixed positions relative to a rear corner post or posts and the back portion of the cabinet fame. An expanded space is formed between a back door and back portion of the cabinet frame when the expansion brackets are extended in a rearward direction from the rear corner post or posts, enabling the expansion cabinet to accommodate electrical component boxes that are too large to fit within the cabinet frame. One or more box mounts are also installed within the cabinet at or near the rear corner posts and near the expanded space. Each box mount engages and positions a component box with respect to the back portion of the cabinet frame.

Abstract: A female attachment for a dental prosthetic device is made by embedding the precision male part of a precision core into a wax-up, leaving the anchor part thereof exposed; sculpting the wax at the boundary line between said precision male part and said anchor part; investing the wax-up and core with investment material; removing the wax, leaving the core and the investment material to form a mold cavity; casting the prosthetic part in the mold cavity to form a female attachment in the resulting prosthetic device; and thereafter removing the core and the investment material.