Although last week we were able to successfully control the speed of the spooler, problems rose with the different types of plastic being extruded out of the extruder. By running tests at 60 seconds and 120 seconds, we were able to find the rate at which plastic was extruded in grams/seconds. We found out that virgin pellets were extruding at a faster rate than our grinded PLA filament. To fix this problem, we thought that adding weight would help extrude the filament faster. Although this was true, filament was extruding with bubbles and with a poor result. We saw that another component of the problems is that the filament was being grabbed from the back of the hopper and pulled towards the front to be melted. To resolve this issue we designed a funnel, so plastic was fed towards the front of the hopper at a constant rate. From our tests this came out to be helpful, however the rate of extrusion is faster than we anticipated so we are going to adjust the spooler to the speed of extrusion. We also realized through multiple tests there is no hydrolysis problem. All the weights before the testing and after within the filament turned out to be exactly the same. The group also got together and designed bins to collect coffee lids from the coffee shops around campus as our source of plastic waste. The the other part of the group finalized the poster to and sent in the first draft of the winter presentation that will be on March 17.