the wetted strands 12 14 the weaving procedure is repeated by alternate actuation of carriages 100 and 100a and running bar assemblies 50 50a respectively until the slots 28 30 are filled with stretches or runs of wetted tensioned strands 12 14 up to the level of the detent horizontal terminal portions 184b the strands 12 14 in the slots are then severed from the portions emanating from spools 144 where the strand free ends 12a and 14a pass through the clamping bar assemblies 150 150a this must be accomplished so that the form 24 can be moved from the weaving station table 18 prior to transfer of the woven grating g from the form 24 to the compression mold that operation is in accordance with the description within my earlier u s pat no 3 772 126 preferably the form 24 is mounted on rails not shown and moved from the position shown in fig2 further to the left where it is rotated so as to dump the wetted strands from the slots 28 30 of the form into mirror image slots within the upper face of a bottom female mold half at a compression molding station not shown while it is preferred to wet the fiberglass strands 12 14 in the tanks 38 38a prior to handling of the strands by the weaving machine running bar assemblies 50 50a it is possible utilizing the apparatus of the present invention to weave the fiberglass strands in a dry condition and to transfer the dry grating preform into the mold from the form 24 in such case the fiberglass strands are wetted in the.