Universal tool for cold inlaying preparation of sample with conductive path and preparation method

The invention relates to a universal tool for preparing a sample with a conductive path by cold embedding, which comprises a sample preparation body, a T-shaped pressing block, a pushing assembly and a lifting assembly, and is characterized in that the sample preparation body comprises a first U-shaped groove, a second U-shaped groove, a threaded hole and a vertical through hole, a piston is matched with the vertical through hole, and the T-shaped pressing block is connected with the sample preparation body to form a cylindrical channel; the pushing assembly comprises nuts and hand screws, the nuts are fixed to the side surfaces of the sample making body and are coaxial with the cylindrical channel, the lifting assembly comprises a base, a supporting column, a driver and a connecting rod, the sample making body is connected with the base through the supporting column, and the driver drives the piston through the connecting rod. The method for preparing the sample with the conductive path by using the tool com