MetalWorks411 » Safety http://www.metalworks411.com Just another WordPress weblog Sun, 14 Mar 2010 16:25:20 +0000 http://wordpress.org/?v=2.9.2 en hourly 1 Welding Lenses and Cover Plates http://www.metalworks411.com/welding/33/ http://www.metalworks411.com/welding/33/#comments Sat, 07 Nov 2009 19:35:13 +0000 metalworks http://www.metalworks411.com/?p=33

Welding Cover Plates and Lenses. In this video I will do a comparison of the Polycarbonate lenses vs. The CR-39 lenses. I will demonstrate that the Polycarbonate which is impact resistant is the only lens I would use.

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