I am using FLIP SOP and a flip boundary SOP to source a sphere with a mask point attribute noise with values between 0-1 sourcing on the first frame, as I start the sim this mask attribute get stick to the particles and I want to remove particles with values bellow 0.5 at certain frame dynamically, how can I do that with this workflow?

mzigaib
I want to remove particles with values bellow 0.5 at certain frame dynamically

you can dive inside of FLIP Solver SOP and add POP Wrangle for example

Thanks for the feedback,
I tried with a pop kill but no success I will try with the pop wrangle, seems in order to make wholes on the fluid surface I think you need some kind of volume operation but I do not know how to do it inside the flip SOP, am I wrong?

mzigaib
I tried with a pop kill but no success

POP Kill will not work directly, since POP Solver that's inside of FLIP Solver has Reap Particles unchecked, so it doesn't remove @dead particles

mzigaib
seems in order to make wholes on the fluid surface I think you need some kind of volume operation but I do not know how to do it inside the flip SOP, am I wrong?

during the simulation you can just delete the particles as the surface is generated from them

however if you want to do it on the source before sourcing then yes, FLIP Solver SOP uses volume sources

Oh it does work!
Thanks!