I watched the video and I have seen it before.I have also tried the plastic lids I posted about in the past.
They worked ok a few times I tried them.
I no longer use those...what I have learned,is when you are done final shaping your dough by hands holding it up,its never perfectly round when you first lay it down on a peel,screen or pan.Sometimes you get close,but its never perfect.
You have to lift,pull and/or tuck the dough to the Final circle size you want.Sometimes one side is a bit shorter,you pull the dough on that side to the edge you want it to rest at.
The pizza maker in the video does the same thing after he puts the dough onto the peel.Watch him lift and shape the dough edge onto the peel.His dough actually fell off one side of the peel a bit.What he does is minor,because he looks to be very experienced at it.He got the shape close enough not to need much work to shape on the peel.
Anytime I shape a dough and put it on a specific sized screen,or peel,it always requires me to lift/stretch/tuck here and there until its perfectly aligned with the shape of the screen.Sometimes the dough is a bit larger than the screen,I lift and guide it back onto the screen and adjust the other sides to compensate.If I stretched it too large,I cant make it shrink back,so I transfer to a larger screen or I cut off the rim and have a very thin pie with no rim.Still works out ok.
I do the same thing with my Large super peel...it has a cloth on it.I took screens and used a permanent marker and traced the circle of the screens onto the cloth. I have 2 different sizes on there now.When I shape a dough for a certain size,and lay it down on the super peel,I lift,tuck and pull on the dough where it needed,to match the circle I drew on there.
Works great.I use the trace to help me make a perfect circle after I lay the stretched dough on there.
I am not saying to NOT use the mold,it might help you achieve results better than just taking the dough out and doing it all by hand.With some practice,I am now able to take the dough out of the bowl,shape into a circle by hand on the counter,then lift and shape to 14,16 or 18,depends what size pizza I am making,then lay it down,and final lift and tuck to a circle size.