Hello guys I will show how create a 3dsmax 3d stool model tutorial.
I have used following techniques shown below in this 3ds max tutorial.
[1]-Click on the chamfer cylinder button and create two chamfer cylinder with the following size
Place like me
[2]-Create one more chamfer cylinder and place like me 
[3]-This is time create four chamfer box and place like me 
[4]-Switch to the first chamfer cylinder and convert into the editable poly 
[5]-Now make the selection and apply the extrude polygons with the amount of -1.0 
[6]-Now your object should look like this 
[7]-Create the wood material like me 
[8]-Set the skylight like this with the good following amount as shown below 
[9]-This is my final image of the stool
Enjoy 