I noticed that some soap and shampoo dispensers dispense too much soap per press, so I designed a parametric collar to change how much soap is dispensed per press to reduce waste.

To customize for a specific pump: 

1. Set the “diameter” parameter to the largest outer diameter of the stem of the pump (including the threads on some).
2. Set the “height_total” parameter to the travel distance of the pump.
3. Set “reduce_by” to how much the amount dispensed should be reduced by in percent.