The present application relates to a microdermabrasion device. The build piece is to a chemical etchant such that the support structure is removed from the build piece and the dimensions of the build piece corresponding to the desired part are reduced to a second set of dimensions. Thus, when the quantity remaining is less that the required amount, a warning will be provided to indicate that the dispensing product should be replaced, as it will be empty before the next service interval. On a transmit or add side, a buffer is configured to store payload pointers and a synchronous payload envelope.