Home Slickdeals PolyTerra PLA Filament: Buy 2, get 2 free. Slickdeals PolyTerra PLA Filament: Buy 2, get 2 free. By ARCOM - 8 November 2022 40 0 SHARE Facebook Twitter Go to the deal page: PolyTerra PLA Filament: Buy 2, get 2 free.