A few posts in 3d printing Facebook groups have shown flat masses made by melting shredded failed prints and filament scraps. I do not want to melt PLA in my oven due to the fumes that would be generated, so I never tried, despite wanting to recycle prints instead of throwing them away. Having large, flat masses of filament would save me the trouble of printing shelves for the cabinets I plan to make. After a recent slew of failed prints for a coffee table project, my desire to convert them into shelving pieces increased.