 The paper discusses a method for reducing voids and improving adhesion in fused filament fabrication, FFF, by using a roller integrated with the filament dispensing nozzle to compress just deposited filament, resulting in a 10x reduction in void formation and significant improvements in UTS and material toughness. This article was authored by Deshan Ravuri, Swapnil Solvi, Hadakuma Projapotti, and others.