I’m experimenting with combing fur and I’m frequently running into this problem, where a set of hair particles appear to get tangled up among themselves and cannot be combed:
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I think this situation is caused by releasing the left mouse button and then moving the mouse back to where the initial combing action started; Blender tends to be slow to respond when combing fur and it doesn’t always realize that I’ve let go of the mouse button and still thinks I’m combing. I’ve gotten Blender to respond a little better by turning off subdivision modifiers, but this situation still occurs a lot.
When I have “stuck” hairs like this, my first line of defense is to set the strength of the Comb tool to 1.000, but that doesn’t always work.
Sometimes I can fix this issue if I view the model from a different angle and try combing again.
Sometimes I can fix this issue if I uncheck Deflect Emitter, comb the problematic area (which usually makes the hairs hide inside the object), check Deflect Emitter, then comb the problematic area again (which makes the hairs pop outside the object).
However, there are other times when nothing appears to work. In fact, sometimes it seems impossible to select the individual particles using Box Select, Circle Select, hovering with the mouse and pressing the L key (for Select Linked), or left-clicking with the arrow tool. I can select the particles if I go to Select -> All, but that isn’t helpful since I’m then selecting everything. I have no idea why I can’t select these specific particles that are very clearly in the viewport. If they were vertices, I could easily select them, but as particles I can’t. It makes no sense.
I have been trying to work around/fix this problem for a couple days, and I can’t seem to figure out a technique that will reliably comb hair when the particles get “stuck” like this. (And they seem to get “stuck” a lot.)
How can I fix scenarios like this? My Blender file can be downloaded here: http://www.sundriftproductions.com/blenderartists/kitten_fur_05.zip