NEVER, EVER spray anything if you don't now for sure what it is. This handy tip comes from Marc R Hanson, who has a very cool pastel demo on his site. Marc writes:
"I use Krylon 'Kamar' as a final varnish for many of my oils. I also occasionally use Krylon 'Workable Fixative' for drawings. If you haven't noticed the labels on all Krylon 'art' type sprays like these two and 'Crystal Clear', etc., look EXACTLY ALIKE except for the actual type that says what it is. There is no label identity for the individual type of product. And even at that the type is all the same 'type' and color gray.
"Let me just say that removing spray fix from an oil painting ( which became a part of the oil painting when grabbing the supposed varnish can but instead the fixative can was what was used ), is almost impossible!!!
"So that's my contribution... look close before spraying!"
If you have a handy tip or dire warning you'd like to share, email it to me at firstname.lastname@example.org with your name and blog URL.
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