Here you can see the end result. By connecting each pair, we have created new polygons! This area is probably the hardest part of this entire toaster.
For our next trick, we have to close up the holes we've created in the sides of the mechanism slot. To do this, use your "Boarder Select” mode, and click on an edge surrounding the hole. Max will automatically detect the hole and select the entire boarder.
Neat huh? Click "Cap”, which is highlighted in the image, and it will seal up the hole with a single polygon.
Next, we need to connect all the edges that are around the circumference of the toaster through the mechanism slot. We'll do this by selecting the ring of edges inside the mechanism slot that resulted from our vertical Shift-Drag operation (remember?).
In your front or side viewport (depending on how you created your toaster) you'll need to carry out some delicate operations. Use the "Connect” tool to create 3 connections across the edges you selected in the earlier image.
Take each of these sets of edges you made and adjust them so they're pretty much where they belong across the mechanism slot. They should be close to what the edges along the side of the toaster look like.
You can see that it's just a matter of moving them around. No need to be perfectly precise; subdivision modeling is surprisingly forgiving on co-planar
faces like these.