Purchased my first alum block about a year ago (Maggard). It's been used approx. 2X/week. It doesn't seem to be shrinking but it's developed a "hollow" on the inside. I carefully dry the block after each use and let it sit out in the open air to dry completely.
How do you know when an alum block needs to be replaced?
How do you know when an alum block needs to be replaced?