Before using a solar filter : DO read the instructions carefully DO make sure the filters carry the &quot;CE&quot; mark DO check filters carefully for damage In addition : DO observe the Sun indirectly by projecting an image onto a screen through a small hole in the middle of a large piece 
(the Sun; by projecting; an image) (the filters; carry; the &quot)
the Sun the filters
by projecting carry
an image
the &quot