1. Systems and devices for moveably clamping and easily unclamping t-slot profiles to position an object in three-dimensional space, comprising: two parallel, vertical t-slots profiles, wherein a first t-slot profile comprises metal forming at least one slot running the length of the first profile, and wherein a second t-slot profile comprises metal forming a cavity sized to snugly receive an elevator and guides; a clamping assembly, said clamping assembly comprising the elevator and a bushing tightly sandwiched between guides, a cam rod running through the elevator and guides and having a pocket that is positioned near the bushing within the elevator, a linking rod connecting the elevator to a locking foot, wherein the locking foot is sized to moveably fit within said slot running the length of the first profile when said locking foot is unclamped, a handle connected with the cam rod, wherein manipulating the handle in a first direction will move the cam rod, thereby moving the pocket relative to the bushing, lifting the elevator, linking rod, and locking foot, compressing the locking foot against an inside surface of the slot running the length of the first t-slot profile, thereby locking the two t-slot profiles together; the second t-slot profile has a bottom end that is connected with a horizontal table; the first t-slot connects with the second t-slot profile by the clamping assembly, wherein when the clamping assembly is unlocked, the first t-slot profile may move up and down relative to the second t-slot profile, and wherein the first t-slot profile is vertical with a top end and a bottom end; a horizontal beam connected with the top of the first t-slot profile, extending out over the horizontal table wherein the horizontal beam is connected with an object that may be positioned above the table.