Common line cutting in Camduct2015

[Anonymous]

Dear all ! 

I've been trying to set the "Common line cutting" property in Camduct when writing the NC file for my nest as guided by Autodesk Camduct Help on this link: 

http://help.autodesk.com/view/FABRICATION/2016/ENU/?guid=GUID-2C2968CC-36EA-4A3B-A883-2E15AC00E101

I use the plasma cut with my post processor is this:

As I followed all the instruction from the link above I came to set my "margin" between parts (before nesting) and tick the option "Common line cutting" before writing the NC for the sheet as below: 

1. Check setting of Keft values 

2. Automatically nest the items 

3. Select machine and "common cut line" properties before writing NC file 

4. Write the NC and check the NC file

Well, I expected that my tool won't cut the line between 2 parts which have line in common but as I can see in the NC file, the tool still will cut twice between the common line as I can see the code and I can zoom out the common line. 

I wonder if there is anything that I didn't do properly or I totally misunderstood the use of "common line cutting". 

Please give me advise !! 

Cheer! 

[LanceTSM]

At step 2 you need the "Margin between parts" set to 1mm to equal your Tool Kerf value.

[Anonymous]

Thank Lance for your answer! 

I did set up my Kerf and margin between parts (of nest) at the same value as you recommend but still it doesn't work so far. Additionally, when I read through Autodesk guided for Camduct, they specified that the "margin between parts" value has to be at least "equal" the "Kerf" value (so if my Kerf value is "1.5mm" then I should set my "margin between parts" value to be at least "1.5mm", obviously it can be "2.0mm").As the photo below: 

I reckon, the point is the margin can't be less than the Kerf because we won't get the right dimension of the parts since the "tool width" gonna be over the gap between parts. 

So we have to at least set the margin to be greater/equal to the Kerf so that after doing nesting with "common line cut" property being choosen, the nest will automatically remove margin value down to equal "Kerf" value (if we set margin value greater than Kerf value before nesting) and keep the gap between parts (if we set margin value equal the Kerf value before nesting). 

But, down to the original problem, still I tried your recommendation and it hasn't worked yet. Any idea Lance! 

Thank you for your reply . 

[LanceTSM]

We are still running 2014 due to some other issues that haven't been fixed in later versions, so just tried Common Line cutting in 2015, 2016 & 2017 and could not get it to work, so it looks like it is broken again (still?)