Quality surgical loupes are expensive, and for surgeons in training, they can present a significant barrier of investment. Through the lens (TTL) loupes refer to loupes were the magnifying optic sits within the glass frame. This enhances peripheral vision and ease of use. A project to design and 3D print a set of loupes for less than $40 was set to demonstrate that basic functional products are within reach. 3D modelling of a basic design was completed using 3D modelling software called Plasticity. Existing loupe lenses were removed from a pair on non-TTL loupes with a retail value of approximately $60. A free mobile application named EyeMeasure by Dotty was used to measure inter-pupillary distance (IPD). Clear lenses were modelled with cutouts for the desired IPD, easily modifiable within the design parameters. The models were printed using a Stereolithography 3D resin printing process in parts, with lenses and frames manufactured separately. The models were post cured so that all parts which contact skin are ISO compliant and TGA approved for skin contact, polished and assembled. Once assembled, the loupes are analogous to low-cost consumer loupes with a material cost of less than $40. This method of fabricating surgical instruments and aides is experimental, and whilst not intended for practical use, highlights the capabilities of emerging consumer technologies for healthcare professionals.