Lots of interesting stuff in this thread. I am currently using the Trend air shield. It is a bit top heavy but it does a good job of filtering the air. I'm not sure how it will work out in my shops cold turning area but the cool air on my face during the heat of the summer is nice. I have taken a good look at the battery, fan, and filter system and I think that I can take them off of the helmet and attach them to a belt then use a tube to pipe the air to the helmet. I will have to figure a way to attach the tube but it won't be an obstacle for me. I have also been looking on eBay and discovered that I can get a 12v LI battery pack and a high power computer fan for maybe $50 bucks. I believe I can engineer a good filtered air system from these components too. I am curious to know if anyone else has tried anything like this and how it worked out.
Grandpa
Well equiped wood shop
Universal VLS230
Sand Carving toys
Corel X8
Randy Walker aka woodchuck
Duck River Woodturners VP
TAW member, Symposium comity member
Volunteer Woodturners member
Dickson Woodturners member