Purelite respirators

[petermoffatt]

I recently saw a reference to a 10 hour battery pack made by BrianR for a Purelite respirator, but I have been unable to find the original showing how to make it, can anyone help

[Dan]

Peter,

If you use the search button at the top of the page you can find all of Brians past posts or just search for purelite. I tried it and ended up here.

http://www.woodworkforums.ubeaut.com.au/showthread.php?s=&postid=1621&highlight=purelite+battery#post1621