With most eclipse glasses sold out across the country, a pinhole projector offers a simple, homemade alternative to safely view the event. A partial solar eclipse will be visible in the UK this week (Image: Getty Images/iStockphoto)How to make a pinhole projector for the solar eclipseA pinhole projector, which can be assembled using everyday materials, allows people to observe the eclipse indirectly by projecting an image of the Sun onto a surface, making it safe for the eyes. To make a basic pinhole projector, all you need is two pieces of white card. For those looking for a slightly more involved project, a box pinhole projector can also be constructed for a steadier view. Where to buy solar eclipse glasses in the UKYou can buy certified solar eclipse glasses in the UK from reputable astronomy retailers, specialised online distributors, or general online marketplaces such as Amazon UK.