Generic model cutting

[muhammad_isyraf6]

I am trying to make something like a pyramid corner to fill up the gap (As shown on the right) but extending the extrusions to cut doesn't seem to work. Is there any solutions for this?

[Ahmed_Muharram]

do you model all the element and void in same model in place ?

[muhammad_isyraf6]

yes. 

[jay_colcombe · Accepted solution]

The best way i can see this working is creating a rectangle for the corner and then 2 angled void extrusion following the original shape edges so they can be used if the shape adjust to cut from this to create the pyramid shape

[ToanDN]

Why don't you make the main piece bigger and use void to cut off 3 sides?  

[muhammad_isyraf6]

Thank you very much I tried your method and it works!