Can 4mm polycarbonate be cold bent into shape of windscreen ? took cover off today and after a short period since it was fitted small internal hairline cracks have appeared on the curves luckily I have got enough material to make 2 more but do not want the same happening again
If you can make even the most rudimentary former you could have a go at hot forming it using a heat gun. Any sort of permanently formed curve wil help to reduce the stresses in the screen.