How to use the Blob brush for Illustrator Tutorial

The blob brush in Illustrator CC CS6 etc can be found beneath the paintbrush tool or use shift+B to select the tool. The tool uses fills and not strokes.

Blob brush in Illustrator

how to use blob brush in Illustrator
  1. Go to the paintbrush tool

  2. Select the second tool 'blob brush' (Illustrator toolbar)

  3. Set the color of the fill for the blob brush

  4. Double click the icon of the tool to change size settings etc

  5. Apply tool to artboard

The blob brush is a wonderful tool for some really unusual art in Illustrator. You can use it to create flowing lines. You can use it to create tangled artworks. You can use it to create quick zigzags. You can use it to create quick grids. You can use it to create basic lines. You can use it to create lovely flowing strokes and drawings


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You can blend different objects in seconds simply by passing the stroke through two or more objects.


You can use to apply blots and dots and splatters (the size of the blots can be made to vary via the randomization of the size of the applied stroke) and much more to the artboard.


You can see the settings for the tool by double clicking the tool icon or pressing return while you have the tool selected and there are a number of settings to be altered and many different results can be achieved by subtle changes to the settings


There are a number of settings

1) Keep selected

2) Merge only

3) Fidelity

4) Size

5) Angle

6) Roundness.


It has a similar look to the Photoshop brush tool with size and angle etc. The keep selected and merge only with selected are very useful if you want the generated art to stick together and create an extended path (though, you can also use the pathfinder to unite the results).


The size and angle etc are great for creating calligraphic brush strokes of varying dimensions. There are also a few additional options such as having a fixed size or introduce randomization and variation for the size (as well as angle and roundness) as well as settings for an artpad / pen. You can use them to apply the strokes and the strokes will be generated with a different size on each application.


The tool can be filled with gradients as well as solid color and also patterns


You can add the vector path generated by the tool in a straight line by holding down the shift key as you use the tool. You can constrain the generated line to 45 degrees and 90 degrees. You can repeat apply the lines and generate a series of parallel lines


You can also use the tool with the shift key down and create a continious line in the form of a grid or a zigzag or frame or perhaps a maze by changing the angle of stroke.


Once you have finished creating the straight line designs, you can then use tools to modify the paths, you can use the appearance panel to add fills and strokes as well as effects such as blurs and more to the art.


As you add the artwork, you will only see the fill being added but you can always add a stroke on completion as well as other effects such as live effects / blurs / additional fills etc via the appearance panel. You can also then add width profiles to the Illustrator blob brush. You can add dash styles and much more


Depending on the selection set for the tool, you can merge with other paths already created (circles etc). Select the tool and them double click the tool icon and make sure that the merge and selected are set to ON. You can then quickly apply the strokes to paths such as circles or rectangles or any other paths to create interesting variants of an existing design such as creating distressed works or frames and more.


You can control the merging by only merging with selected check set to on. You can also add the strokes and then add additional paths to that via the pathfinder combine / unite. You can also use the subtract to add perhaps add spots and dots to the artwork. You can also add them to symbols (in editing mode) and can find a lot of different symbols on this site for use with the tool. Millions of wonderful organic artworks can be produced by combining standard paths with the strokes. Once you have finished, you can change the color and perhaps add effects and additional paths to the design.



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