Over the years I've used a number of protective face shields. I currently use a mixture - a bog standard visor type, as seen worn by old ladies in most supermarkets (during these pandemic times). I usually were this one for cutting/grinding metal and light turning with respiratory protection underneath. My Trend Airshield Pro (with internal air supply and filter) for turning and sanding wood. And the thing you can see below, its an ex-Police Riot Helmet which you can get off Ebay. The visor perspex is about 4mm thick and I use this for the really heavy, dodgy pieces I get onto the lathe - you know the ones where the lathe does a dance of death around the shop and you wonder if you'll make it to the next tea-break!
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