The ornamental design for a grip for a hotair blowing tool for melting solder, as shown and described.
FIG. 1 is a perspective view of a grip for a hot air blowing tool for melting solder;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof; and,
FIG. 6 is a top view thereof, the opposite side being a mirror image of the side shown herein.
The broken lines depict portions of the grip for a hot air blowing tool for melting solder in which the design is embodied that are not considered part of the claimed design.