Confused about bottom height

I’m working on a tool drawer organizer and when I extruded the location for each tool, I set the depth using the extrude command. (For example, one tool might require a depth of .3 inches into the board, another might require 0.5 inches) I believed that was how I could use one 2D pocket cut to cut many different tool locations on the board.

I programmed basically one 2D pocket cut for all the non-round holes with a bottom height set in Fusion 360 as -0.5 inches from the model top. (using 3/4 plywood as stock).

Every cut made is to a depth of .5 inches.

So, I’m wondering, does the bottom height dictate the depth of each and every cut and not the extrusion cut depth?

When I say bottom height I’m referring to this: https://prnt.sc/w1d59c

Thanks

Toolpaths will never cut below your bottom height. But the other behaviors depend on the toolpath type. In your case you could set the bottom height to “selection” with no additional offset.
A 3D toolpath would machine all of your pockets to the correct depth as long as the bottom height is below that depth.

When you say “set the bottom height to “selection”” does that mean I would have to have a separate operation for each non-round hole?

I was trying to make multiple non-round holes with just one operation.

You’ll just select all the pockets with a 2D toolpath.
With a 3D pocket toolpath, you say “cut all of the pockets in this area to their modeled depth”.

Thanks. Maybe I should try a 3D tool path. when I first started (not too long ago) I thought "everything is 3D and learned that didn’t always help. So I’ve been steering towards 2D.

Sometimes you can use either to accomplish the same thing.
I recommend trying both sometimes. You can always suppress or delete one before you export.

Manipulating the bottom height can be really useful to control the depth of any toolpath.

Just FYI, this first paragraph here at the top is what makes me think that bottom height is controlling the depth of every pocket.

It does in a 2D path, but the “selected contours” can be at different depths in the same operation.
In a 3D pocket operation, all pockets within the selected area (default is the whole stock I think) will be milled to the modeled depth.

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