Pipe wrench - video

"Make a Strong Pipe Wrench"
?
0'.05" in, a Grade III bolt.
At 0'.25" fully half the engagement diameter is ground away; not flat, or parallel in either plane.
At 0'.40" notch for the adjustment nut; not parallel seat for nut, nor allowance for thrust washer.
By 0'.42" prepping to weld the handle. Instead of this being one piece, that and lower jaw are welded not only at narrowest cross section, but where the strain of torquing is highest.
Now, 1'.36" two cheek pieces welded on, on top of handle weld, instead of overlapping.
Of course, here in 2'.40" threaded portion attached to upper jaw, again at narrow juncture.
My favorite, 2'.55" and countering industry standard of sharp milled teeth; angle grinder and narrow cut off wheel.
Maybe intended only for threaded copper, garish internet paint step eliminates potential hardening of said teeth.
Closing seconds of vid, it's demonstrated on a nut and bolt, IIRC are straight threads, not taper of pipe with increasing force needed to drive a tight joint.

Right in step with trendy adoptive identities, a filmy shadow of a pipe wrench, but terrific paperweight.