Producing polycrystalline diamond compact (pdc) drill bits with catalyst-free and substrate-free pdc cutters

A method comprising:

• forming a plurality of catalyst-free synthesized polycrystalline diamonds using compressive pressures within a range of 10 Gigapascals (GPa) to 35 GPa and temperatures within a range of 2000 Kelvin (K) to 3000 K;
• providing the plurality of polycrystalline diamonds, each of the polycrystalline diamonds having a cross-sectional dimension of at least 4 millimeters;
• depositing the plurality of polycrystalline diamonds within a mold;
• after depositing the plurality of polycrystalline diamonds within the mold, forming a drill bit body within the mold, wherein forming the drill bit body within the mold comprises:
• (a) depositing a layer of matrix body material particles within the mold;
• (b) depositing an adhesive ink within the mold;
• (c) curing the adhesive ink;
• and
• (d) repeating (a), (b), and (c) in order until the drill bit body is formed;
• and
• after forming the drill bit body, performing a sintering process to remove at least a portion of the adhesive ink and increase a density of the drill bit body to form a polycrystalline diamond compact (PDC) drill bit, wherein the sintering process comprises heating the plurality of polycrystalline diamonds and the drill bit body to a sintering temperature greater than about 600 degrees Celsius (° C.) and less than about 1400° C.