Abstract: A cutting tool of a hole punch has an outer circumferential wall extending in an up-down direction and surrounding an axis, and a cutting surrounding surface extending and inclined inwardly and upwardly from a bottom peripheral edge of the outer circumferential wall toward the axis. The cutting surrounding surface has upper and lower cutting surrounding edges, and defines front and rear cutting edges. The front cutting edge has first and second lower points on the lower and upper cutting surrounding edges. The rear cutting edge has first and second upper points on the lower and upper cutting surrounding edges and higher than the first and second lower points. A concaved paper pressing curve surface extends upwardly from the upper cutting surrounding edge to define a paper moving recess.

Abstract: An auxiliary binding jig is configured for assisting a plurality of binding members to bind a plurality of papers into a bound document, and includes an auxiliary plate body having opposite first and second planar surfaces, and a plurality of engaging holes extending through the first and second planar surfaces and each having a constriction which divides a respective engaging hole into two hole portions and which is formed by two press tabs defining therebetween a slot communicating with the hole portions. The press tabs are configured to press against an outer ring of each binding member when each binding member is inserted into a respective engaging hole through the slot so as to position each binding member on the auxiliary plate body.