Hands-on DNA synthesis is inaccessible outside advanced labs. We hypothesize that a safe, low-cost DNA printer using terminal deoxynucleotidyl transferase (TdT) can replicate the stepwise assembly of sequences with non-functional DNA. I will prototype and test whether the device can reliably produce short polymers to demonstrate synthesis principles. If successful, it will provide an open-source tool for teaching synthetic biology worldwide and may enable alternative DNA sequencing methods.