As our current challenge is such an open one ... we thought it might be a good idea to have a quick post to provide a couple of tips and bits of advice on what not to colour with your Copics...
this is adapted from the Copic Certification Student manual (adapted from www.ilikemarkers.blogspot.com)
Things that will hurt your markers...
* White out or opaque white - do not colour over white out even if dry as it will transfer some white to your marker tip which will then leave white marks in the middle of your colouring.
* Un-fired clay - will discolour your tip as bits of the clay clog the tips fibres.
Ceramic paint-it-yourself ornaments are fine, sculpey that is baked or glazed ceramics are ok.
* Acrylic paints - you might get away with some quick work (not recommended) but if you colour over most acrylics they will clog your tip. Best to use paint over the top of markers OR seal the paint first with a waterbased varnish.
* Chalks, oils, pastels - use after you do your Copic work.
*untested inks or pens
* Solvents or oils
RULE of THUMB .. if something smears when it gets wet and is opaque, STAY away or test it first. If you must colour over it use your airbrush!