in this guide we are going to learn use of pressure function in blender to make puffy surfaces

now i assume you already know how cloth sim works if you dont i made a guide read that first


here :




lets try it on a cube



first add cube and scale it like me if you want (or dont)


after that go to face selection with clicking on 3 key in edit mode and
select the face you want to do the job on



simply press p key and then press 1 key


select the new face and add more geo to it you can do that with sub-div modifier with pressing ctrl+ a number between 2-5

after that we are going to choose some area for pin group


select and add them to a vertex group

now add a cloth to the sprated mesh and enable pressure

add the pin group to the pin group under shape section


go to field weights and set the gravity to 0

go up and change the preset to slik (its good for this)

and hit play


now if i want to see more puff i simply add more value here

this part of guide is done if you want you can add more areas to the pin group and see some intersting thing .

now lets say you want to add object to interact with the cloth


you simply add a object that you want and give is a collision and place it right above the surface
like this :

and run the sim

also make sure to set your pressure value not more than 9K
if you set your pressure value too high its not going to work so simply adjust the value again

you get somthing like this now to see better you can add sub div modifier after the cloth modifier

you can move the 2nd object while the sim is running but dont move it too fast

now lets do another example



maybe you are going to work on a animation model and your model has somthing inside of his pants
(im sure you know what that is) and you want to show it

what you do is :

first you place the "thing" behind the cloth and then run the sim

after that you slowly decrase the pressure value and you get this :


so now you know another thing that you can do with pressure


now let me show you the "thing" so you understand better
(now that im thinking no i wont show you because of steam.sorry)

so now you know that this can also show the body parts behind the cloths
maybe you use it for you nsfw project right ?

so you learn 2 thing now

sometimes this thing happens


to fix this you use knife tool


note: use thise only when you 100 % sure you are not going to move 2nd object anymore


go to frame 1 and go to edit mode select everything and then press ctrl and click on the 2nd object go to the flat view and choose
knofe tool from the menu



if that did not work choose the 2nd object and go to edit mode select one face and press p then 1
or duplicate the face and come out of edit mode



now select the face first and then hold shift key then click on the cloth


press tab and go to top view and press F3 and search for knife project and click on it

you get this

now go to the vertex menu and add this into pin group

remove the collision from the 2nd object and add sub div modifier for better look

lets do another example this time with Cylinder


let me teach you the simple deform modifier BASICS before we do this and then we go for Cylinder


simple deform is for deforming (1000 iq there) its has cuople of modes

for example if i add cut here and place my curser there and after that press right click and set mr origin point to the curser


and add more cut to this side like this


then add the modifier and set it to bend on z axis i get this



so now you know the basics of this modifier

back to our cylinder

now use what i showed you in this guide to make somthing you like

maybe this time add more pin point to get shape like this


also you can use shrinking factor to get this results

with value set to 0

with walue set to -0.7




enjoy