David Sims posted an Open Source design for a face shield on Twitter on Sunday.

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He told the BBC “I’ve been creating 3D printed face shields for the NHS and frontline workers. Anyone with a 3D printer can print a face shield.”

He said to ITV “It’s gone crazy. Initially I thought I could print ten for some local hospitals, but from that one tweet, I’ve had more than two thousand requests.

“As I’m currently locked in like everyone else it was my way of trying to help. There are thousands of other engineers with 3D printers just waiting from the go-ahead to contribute and help as well.

“These take about two and half hours to 3D print on one 3D printer. Overall, I can make ten a day. The response has been really positive.”

David received an order for seventy face shields from NHS Wales. And the requests keep on coming.

He said “Currently I’ve had about fifty NHS doctors around the UK requesting a quantity of these face shields.”

David explained “From watching the news and how quick this virus was spreading, this seemed like such good protection for people.

“The best way to explain it is it is almost like a headband that goes around the forehead – but it comes out at a distance where you can put a clear sheet on – and a mask underneath as well.”

“We’re making a difference so obviously that gives us a massive drive to continue what we’re doing. It’s just been full steam ahead.”