The present invention relates to a one-hand soldering tip which enables precise soldering work as occurs in micromechanics to be carried out effortlessly by hand. With the use of the one-hand soldering tip according to the invention, it is possible to produce soldered points with extreme precision and safely put down the one-hand soldering tip between the individual operations without an additional stand. A soldering-tin stem 1 can be inserted by means of two support rods 6.1 into support stems 6 which are fastened to the front cap 7. Arranged on the handle 8 is a push-button switch 9 which makes the electrical contact with one of the two heating elements 27, attached in the tip stem 10, against a spring pressure. The soldering tin to be used is introduced in stages at the top into the soldering-tin stem 1 and slides down under its own weight during the melting. The soldering tin is heated only when the push-button switch 9 is actuated. Arranged in the soldering-tin stem 1 is a valve 14 which is formed from a piston 14.1 and the sealing lip 1.2. This valve 14 for the passage of the liquid soldering tin is opened upon mounting the expanding-spring tip 5 by the soldering-tin regulating rod 4 which is fastened to the piston 14.1 pushing the latter upwards and thereby opening the passage. The expanding-spring tip 5 can be of different design in accordance with the working conditions. <IMAGE>
