There not cheap, but look like they would be a bonus, providing the Pyrex cup doesn't break easily or discolour.
http://www.rapidwelding.com/dynamic/DisplayItem.aspx?c=CK-D2GS332LD
Just wondering what the actual lense is like also, it doesn't look like a conventional gas lens, it would be handy if it was better.
http://www.rapidwelding.com/dynamic/DisplayItem.aspx?c=CK-D2GS332LD
Just wondering what the actual lense is like also, it doesn't look like a conventional gas lens, it would be handy if it was better.