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Finished Painting
Finished Painting

How Do I Use Masking Fluid?

http://www.painters-online.co.uk/magazines/default.asp?magazine=12

Tony Paul - Posted on 04 Mar 2009


Practical techniques for using masking fluid


There are many makes of masking fluid and even more makes of watercolour paper. The more absorbent the watercolour paper, the more likely it will be that the masking fluid will adhere to it or be, at best, difficult to remove without tearing the surface. Also, some masking fluids grip more aggressively than others.

Masking fluid rules

 
Always try out the combination of a new paper or masking fluid on a piece of scrap paper before committing it to a painting. Settle on a paper and fluid that work well together and see how long it is before the dried mask proves difficult to remove.
 
• Do not apply masking fluid to damp paper, or dilute it. It may adhere more strongly.

• Don’t try to speed up the drying process of either the masking fluid or subsequent washes with the        over-aggressive use of a hot hairdryer. If you use a hairdryer, keep it very gentle.
 
• Remove the masking fluid as soon as possible. If you have applied the fluid but you find you are unable to start the painting in the near future, rub it off again and re-apply just before you start painting.
 
• In time, dry masking fluid breaks down into an inflexible, leathery scab that is immovable. How soon this happens depends on a number of factors. Don’t leave the fluid on the paper for more than a week. If its surface is no longer tacky, take it off quickly. It may already be too late. Remember, the longer that it is left on, the more difficult it is likely to be to remove.

•  Masking fluid is best applied to naked paper. Applying it over dry washes can cause problems. Either the colour underneath lifts patchily or the paper’s surface pulls off.

Why use masking fluid?


Masking fluid saves us time. In my painting of the coal tit below, I wanted to create wet-in-wet washes as a background to the study of the bird. Cutting in around the bird would have been difficult so I masked out the bird and the branch it stood on with Daler-Rowney masking fluid. When dry it has a yellowish tinge, which is easy to see on the paper.

Some people use an old brush to apply the fluid (it will wreck a good one), but I prefer to use a Colour Shaper angle chisel, No. 0, firm (available from Jackson’s Art Supplies: 020 7254 0077, £2.59). This has a grey rubber pointed tip, looking rather like a brush. When finished, leave the masking fluid to dry on the Colour Shaper and then rub it off. LPUsing masking fluid - stage 1



Step 1


With a bit of practice, the finest lines are possible but you can also apply broad sweeps of fluid with the Colour Shaper. Here, you see the masking fluid applied and left to dry.
 










How to use masking fluid - stage 2

Step 2



The first wash was applied, working over the dry masking fluid. Then the second wash was applied rapidly, wet on wet, over the first to give the effect of out-of-focus winter trees in the distance.
 

Using masking fluid - stage 3






Step 3


Twigs and branches, first in an ochre green then a purplish grey, were painted over the top of the dry washes. When these were dry, I rubbed off the masking fluid. It came off easily.







Removing masking fluid




Step 4


The few places where masking fluid had not covered the bird completely were lifted off with a damp brush and kitchen roll. I left others on the branch to help with its texture. The formerly protected area was now ready for painting.
 Finished painting using masking fluid










                                                                                              





The finished painting, watercolour, 7x5in. (18x13cm)






April 09



  Further articles on the use of masking fluid include:
Using Masking Fluid in a Layered Painting by Elizabeth Groves
How to Use Masking Fluid to Paint Flowers by Pauline Hill

How to Paint White on White - Silver Birches in the Snow by Gwen Scott

 

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5 comments so far...

1.

Bonny Racca

13 Mar 2009 04:47

This was very informative. I've tried masking fluid before and I think now I left it on the paper too long before removong it. t ewas disasterous to say the least!! Thank you for sharing this technique and especially the tips to watch out for. Bonny, on the west coast of Canada

2.

Timothy Fuller

17 Oct 2009 15:16

Great idea with the color shaper Tony, the extra fine control is perfect for those hard to mask areas! Thanks for the information and the fine looking watercolor too. Tim, northern Michigan

3.

Philip Smith

29 Dec 2012 13:11

Very helpful and informative, as a newbie I am finding the information on the whole Painters on Line to be very helpful and as a disabled person who spends most of his time indoors its a great way of making friends.

4.

Kate Whittington

22 Jan 2014 14:07

This was so useful, thank you - perfect as I'm just about to start a painting of some waxwings and needed to do exactly the same thing but I've never tried masking fluid so was feeling very apprehensive and confused. Hopefully after this advice it will turn out just as beautiful as your coal tit!

5.

Petra Palmeri

20 Feb 2014 15:53

Very useful, many thanks

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