  Photometry at 3.4 and 4.6 micron of 128 Population~I WC type Wolf-Rayet stars
in the Galaxy and 12 in the Large Magellanic Cloud (LMC) observed in the WISE
NEOWISE-R survey was searched for evidence of circumstellar dust emission and
its variation. Infrared spectral energy distributions (SEDs) were assembled,
making use of archival r, i, Z and Y photometry to determine reddening and
stellar wind levels for the WC stars found in recent IR surveys and lacking
optical photometry. From their SEDs, ten apparently non-variable stars were
newly identified as dust makers, including three, WR 102-22, WR 110-10 and WR
124-10, having subtype earlier than WC8-9, the first such stars to show this
phenomenon. The 11 stars found to show variable dust emission include six new
episodic dust-makers, WR 47c, WR 75-11, WR 91-1, WR 122-14 and WR 125-1 in the
Galaxy and HD 38030 in the LMC. Of previously known dust makers, NEOWISE-R
photometry of WR 19 captured its rise to maximum in 2018, confirming the 10.1-y
period, that of WR 125 the beginning of a new episode of dust formation
suggesting a period near 28.3~y., while that of HD 36402 covered almost a whole
period and forced revision of it to 5.1~y.
