Single mother Sheryl Lin bought an H13 DTF printer. First month: $800. Month three: $3,500. After her son’s "flying cat" design went viral, monthly sales hit $12,000. She launched "Sunny Printer." A reporter asked the biggest change. Sunny said: "Mom used to watch the clock. Now she watches the printer."

Bas, a Dutch repairman, fixed a RocRow C13A and was stunned by its quality. He bought one for himself. Neighbors saw his prints — T-shirts, tote bags — and word spread. Month 1: €2,500. He added an H13D for bigger jobs. Month 6: €15,000. One year later: €50,000/month — top RocRow distributor in Southern Netherlands. "Good products don’t need fixing every week."

Daniel, a burned-out LA IT engineer, quit and bought an L13 DTF printer. Month 1: $2,000. Month 3: $12,000. He then added the VF13 UV DTF printer for hard surfaces like mugs and phone cases. Month 6: $100,000. He became the largest distributor of both machines in the Southwestern U.S. "I used to fix servers. Now I run my life."