A 27-year-old who built a side hustle 3D printing products to sell on Etsy did $10,000 in sales in one week. He explains the steps he took before coming up with bestselling product ideas.

A 27-year-old who built a side hustle 3D printing products to sell on Etsy did $10,000 in sales in one week. He explains the steps he took before coming up with bestselling product ideas.

Part-time Austin Ziegler, an Etsy seller, admits to getting too excited during the ideation stage. “Every time I have…