[nambass]

I have redrawn the holes and also added a "lip" or end flange where I can fix the main box end sides.


I then added the original lid (box2-upper) and noted that the dimensions are no longer the same. How can I up-size the bottom 2 parts (part 1,3) to be the same measurements of the original size?

Also why do I get the error message of the new end flange I added?

I included the new box with all the holes as well as the original box with lid.

[nambass]

Guys, I need more help. this time with an error I get when trying to do extrude cut.
I manage to draw the box as I wanted it and used an edge flange to join the end sides. I am trying to drill holes on the end sides to rivet the sides.
The process I followed was:
I selected the side and click on sketch and continue to draw the circles of where I want the holes to be and exit sketch mode. I then selected the circles and click on extrude cut. but then I am getting an error that the thickness of the extrude cut will be zero. event when I try to specify the depth of the holes.

What is wrong?

I attached the drawing if someone can have a look - PLEASE!