This spring, Isaiah "HMBL Zay" Thomas walked 3,000 miles from Philadelphia to California in 124 days to raise money for one thing: a free trade school for Philly young people. More than 4,300 people donated along the way, and Mayor Parker gave him the Key to the City. Now he's building it.

HMBL University will teach teens and young adults plumbing, electrical, HVAC, carpentry and CNA skills that lead to real careers. In the Philadelphia metro, the median plumber earns about $74,860 a year, and the city has more openings in the trades than trained workers to fill them.

We're not waiting on a big building to start. The first step is a hands-on pilot in a vacant family-owned rowhouse in North Philadelphia, where young people can learn by doing.

The $1,000 builds the pilot's first piece of real training equipment: a plumbing practice wall. It's a freestanding frame with PEX, copper and PVC runs, fittings, shutoff valves and a working sink, so students can measure, cut, connect, solder and pressure-test pipe safely, then take it apart and do it again. One wall trains a rotating group of students every week, and we'll open it for free "build day" demos for neighborhood youth.

It's small, tangible and visible, and it's the first thing students will put their hands on at HMBL University. Zay will stream the build so the thousands of people who followed his walk can watch the school come to life, with a thank-you to the Awesome Foundation Philadelphia trustees.