3D Printing Pen

FIG. 1 is a front, top perspective view of a 3D printing pen showing my new design;

FIG. 2 is rear, bottom perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is an exploded front perspective view thereof;

FIG. 10 is a front elevational view of the printing part of the 3D printing pen, with the base part omitted for ease of disclosure;

FIG. 11 is a rear elevational view thereof;

FIG. 12 is a left side elevational view thereof; and,

FIG. 13 is a right side elevational view thereof.

The broken lines in the figures illustrate portions of the 3D printing pen that form no part of the claimed design.