Gel Retarder delays the drying time of Jo Sonja Matte Flow Acrylic without reducing the viscosity of the paint. It can be used in various ways allowing an extended working or ‘open’ time for blending and antiquing plus a thicker application of colour in painting techniques. Practice techniques using this medium before committing to a project.
As a painting medium, moisten the brush with Gel Retarder and blend well with colour. If paint drags during painting, refresh by picking up additional Gel Retarder in the brush and repeat palette blending.
Apply a thin coat of Gel Retarder directly to the surface for an extended working time.
Retarder Medium may be used to thin Gel Retarder and decrease the ‘open time’ as needed for your area. Begin with a ratio of 1 part Gel Retarder to 1 part Retarder
Gel Retarder, may be mixed directly into palette colours beginning with an approximate ratio of 1 part Gel Retarder to 3 parts paint.
For antiquing, thin colour with Gel Retarder. Ratio is determined by strength of colour desired. Begin with 2 parts to 1 part Gel Retarder. Apply over the painted surface and wipe to create desired effect. Use Gel Retarder on a cloth to remove excess.
When using Gel Retarder drying time is greatly delayed. Surface may feel dry and still be holding moisture. A hair dryer may be use to speed surface drying. A extended dry and cure time should be allowed and varies due to humidity and climatic conditions.
A coat of Flow Medium, Magic Mix or Clear Glaze Medium is recommended prior to application of varnish. Any ‘seizing’ or curdling of these products indicates the presence of uncured Gel Retarder. Immediately stop application and dry completely before proceeding.
Do not apply Gel Retarder over Clear Glaze Medium or Magic Mix. Gel Retarder will dissolve Clear Glaze Medium or Magic Mix in patches. Clear Glaze Medium may be applied over DRIED and CURED Gel Retarder.
Approximate coverage: 1 ml = 94 sq cm / 1oz = 3 sq ft.
Safe to dry with a hair dryer.
Water based, can be cleaned up with mild soap and cool water.
Conforms to ASTM D 4236 and is Non Toxic.
Article posted on Facebook 29th January 2014 by Lynn:
The question: will Jo Sonja's Gel Retarder make the paint 'gloopy' enough for lino printing?
The answer: oh, yes!!
Today I spent an hour or so with Bernie Jones, a local mixed media artist who wanted to play with some printing. She asked the question and we found the answer.
Bernie mixed up a 1:1 of Gel Retarder and Jo Sonja's Artist Paint, which gave a consistency that was of the right gloopyness (I love that word!). She then went on to used it for lino printing, Indian block printing and dry point printing. All of it was very successful.
Now, I am not the best photographer, but in this photo you can see how well it worked. Bernie used Storm Blue for the initial print. Then she asked if it would 'over print', so she tried go over it with Transparent Magenta - as you can see it worked really well.
Remember, if you are wanting to over print you need to make sure the first colour is dry and that the retarder will increase the drying time.