Hard to scrape walls for complete mixing

These mixing cups have four square tabs at the bottom of the cup that stick out from the cup wall. It seems like these features were added so that the cups stack on top of each other without jamming together, ie: to make it easy to remove a cup from the stack. However, when mixing epoxy, the tabs interfere with the stirring stick, making it difficult to scrape the walls (necessary for a complete mix). Also, the mixing sticks are too small for my purposes, and the spoon-like end does not scrape the sides or bottom as well as a squared end shape.

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