I have been using auto darkening filters in an old school flip up mask for years, as the passive (no battery) single shade type ADF's are now available in true-colour for just about every filter size.i prefer the grind mode to the flip up models but you can buy flip up auto masks
cheers for that, i have a few masks, currently using a esab a50, which in fairness is good but it never seems to sit right and when i got the extra back hood its a pain in the ass to keep it lifted, and forgetting to turn off grind mode is eye wateringly annoying lol, i had a older true colourrtech which was good in fairness but when a empty W argoshield rolls over it in the van, it didn't like it lolI purchased the r-tech below, a lot better that the cheapo I have with the flip up for grinding. Only tried to weld once with pulling it back down
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R-Tech SpeedMaster™ PRO HD - True Colour Welding Mask
Speedmaster HD PRO Pro True Colour welding mask system offering excellent optics, available for fast and free UK delivery.www.r-techwelding.co.uk