The round is partly why it lasts longer. Even swipes around the top instead of gullies. I found with the square chalks that I would have to file four points off of the top every now and then. It could of course been because of the way I chalk. I use the Taom until it splits at the very last 1/8 inch or so.
If you are getting points on a cube of chalk you may not be smartly brush swiping it on your cue’s tip.
The corners are where I always start with a new piece of chalk, not the center. If the chalk had a smooth
flat surface, it would be even easier. I don’t need a shape to tell me where the center of the chalk is.
It is akin to a bar of d soap. I know how to use it and still keep its original shape and contour. I am not implying
you are improperly applying your chalk so don’t take it that way. I’d have to see you apply chalk playing pool
and look at your chalk as well. Instead, what I am saying is you may not be taking full advantage of an expensive
pool chalk by working the outside perimeter of the chalk more than the center. Using the corners is easy when you
are swiping or brushing chalk on the tip. Do avoid twisting the chalk except to start a different corner on the cube.
You will wear down the corners more evenly and you can see the improved results the more often you chalk.
But if the round shape suits your needs, the only thing that really matters then is chalking regularly while you play.