After designing the handheld 3D printing device, we needed an easy way of producing units for testing, validation and sale. In lab, it could take an hour to produce just 10 units. Small batch production usually requires a significant up-front investment to get going. Initially, we looked into commercial bottlers that could handle dispensing solid/liquid-state ingredients at above-ambient temperatures. Such services though, increased the price of the product significantly.
Instead of going with an out-of-house solution, we went ahead and built our own bottle filling machine that could heat up the solution and dispense it. Using off-the-shelve components kept the material cost for the fixturing low (a few hundred dollars). Once the machine was built, we could produce several hundred units in an hour.