Patent ID: 8857783

Claim:
A cement block mold, comprising: a base defining a lower interlocking profile and having an upstanding peripheral sidewall with a single slotted engagement; a top cap defining an upper interlocking profile and having a downwardly extending peripheral sidewall with a single slotted engagement; a flexible sidewall strip having a first engagement at a first end and a second engagement at a second end, the sidewall strip being secured in position by bending the sidewall strip to form one of a circle or an oval, engaging one of the first engagement or the second engagement with the slotted engagement of the base, and then engaging another of the first engagement or the second engagement with the slotted engagement of the top cap; strap retainers positioned on at least one of the top cap or the base, the strap retainers serving to prevent lateral movement of straps used to maintain the top cap and the base engaged with the sidewall strip; and a fill port in the sidewall strip, whereby the mold is filled when resting on its sidewall to facilitate cement flowing into the lower interlocking profile and the upper interlocking profile.