  Visual photometry of 16 WC8-9 dust-making Wolf-Rayet (WR) stars during
2001--2009 was extracted from the All Sky Automated Survey All Star Catalogue
(ASAS-3) to search for eclipses attributable to extinction by dust formed in
clumps in our line of sight. Data for a comparable number of dust-free WC6-9
stars were also examined to help characterise the dataset. Frequent eclipses
were observed from WR 104, and several from WR 106, extending the 1994-2001
studies by Kato et al. (2002a,b), but not supporting their phasing the
variations in WR 104 with its `pinwheel' rotation period. Only four other stars
showed eclipses, WR 50 (one of the dust-free stars), WR 69, WR 95 and WR 117,
and there may have been an eclipse by WR 121, which had shown two eclipses in
the past. No dust eclipses were shown by the `historic' eclipsers WR 103 and WR
113. The atmospheric eclipses of the latter were observed but the suggestion by
David-Uraz et al. (2012) that dust may be partly responsible for these is not
supported. Despite its frequent eclipses, there is no evidence in the infrared
images of WR 104 for dust made in its eclipses, demonstrating that any dust
formed in this process is not a significant contributor to its circumstellar
dust cloud and suggesting that the same applies to the other stars showing
fewer eclipses.
