Inventor, entrepreneur and professor Josep DeSimone says he won’t expand his fast-growing 3D printing technology business to North Carolina even though he’s lived in the state for nearly half his life. Why?

The bathroom bill.

At two separate forums on Wednesday, the award-winning and internationally recognized scientist made quite clear that House Bill 2 – known derisively as the “ballroom bill” – is sufficient reason not to consider expanding Carbon from Silicon Valley to North Carolina. The bill is seen as discriminating against the LGTB (lesbian, gay, transsexual, bisexual) community by critics, including more than 100 companies with a large number of those (Red Hat, IBM, others) in the tech sector.

After delivering a lecture at RTI Institute about “the future fabricated with light,” DeSimone, who is on leave from teaching posts at NCSU and UNC-Chapel Hill while serving as CEO of Carbon, mixed with the crowd. One individual asked him about possible expanding operations to the Tar Heel State.

DeSimone, who recently received the National Medal of Technology and Innovation from President Barack Obama, shook his head.

“Not as long as HB2 exists.”

Others nearby nodded their heads in agreement, according to writer Jane Albright, who covered the event for WRAL TechWire.

“After the presentation, a crowd gathered around DeSimone to ask questions, mostly of a technical bent. A professor from NC State University asked him if he planned to move any of his business from California to North Carolina,” Albright noted.

DeSimone’s company closed on another $80 million in financing this week, boosting its total to some $220 million.

A follower of DeSimone at Tweeter tweeted about the WTW story, calling his comment “Great words.” DeSimone retweeted it to his more than 3,000 followers.

Carbon joins a growing list of businesses that have decided not to expand in N.C. and sports groups as well as entertainers who are pulling events out of the state, citing HB2.

Speaking out at venture conference

At the CED Tech Venture conference in Raleigh, DeSimone in a conversation with North Carolina investor Steve Nelson said HB2 had hurt the state’s image.

North Carolina has lost momentum from being a leader with “its future was still in front of us,” he said, according to ExitEvent.

“It sort of doesn’t feel that way sometimes right now. We need to get back to that and be the beacon of driving things forward aggressively and in a very inclusive way.

ExitEvent Editor Laura Baverman also noted that Google Ventures, which is a backer of Carbon, has stopped making investments in North Carolina.

DeSimone said an East Coast operation for Carbon could employ 300 to 400 people, Baverman reported.