Once a remnant sheet is saved from the nesting job, opened and cut free from the nested sheet there is only one step left before you can use that sheet in a nest. In this example we will use the remnant sheet we saved from our last job to nest more parts.
In this example we use the Remnant-Sheet-1-1.dxf file that was created from the Remnant Creation Example tutorial. If you have not gone through that tutorial yet, please take a moment to do so.
1 Navigate
to your C:\BobCAD-CAM Data\BobCAD-CAM V** folder and open Remnant-Sheet-1-1.dxf.
2 The
first thing to keep in mind is that we cut this shape out. Every cut has
a width to it. When we cut this remnant out in the last tutorial we cut
the line with no compensation, which removed material from the left and
the right of the line. Note in the image below, this is shown in red.
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In a nest with little to no margin, not taking this cut into account could ruin parts.
We will take a moment to update the geometry to reflect the material that was removed from the remnant shape when we freed it from the sheet.
1 In
the Line menu, select 
Parallel.
2 Since
we used a 0.2500 inch diameter tool to cut free the sheet, set the Distance
value to 0.1250.
3 Click
on the vertical line to the left, drag your mouse a little to the right,
to choose the right side of the line to create the parallel line, and
click your mouse again to finalize.
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4 Now
that we have created the proper line, we need to trim off the remainder.
Go to Utilities / Trim Extend / 
Quick
Trim.
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5 Now
that we have the Quick
Trim feature active, click the segments that need to be eliminated.
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The WCS in the CAD window will also be our Machine Zero for the nest.
We need to move this sheet to place it in relation to the WCS as the actual
sheet will be to the machine zero. We will have the top left of our sheet
as our origin and nest in the X+,Y+ quadrant. In order to accomplish this,
we will need to rotate the part 180º and move it to the WCS.
1 Go
to Utilities and choose 
Rotate.
2 Hover
your mouse over one of the lines of our remnant shape, hold shift on your
keyboard and then left-click to chain-select the entire chain. The entire
chain should now be highlighted.
3 Press
the Spacebar on your keyboard or right-click inside of the CAD window
and select 
OK to finalize geometry selection.
4 The
rotation sketch handles appear and we now need to define the degree of
rotation and the center of that rotation. This can be done using the data
entry or the sketch handles themselves. We will use the sketch handles
in this lesson. First, click the center of the sketch handles to alter
its origin.
5 You
are now free to move your mouse around to alter the origin of rotation.
Hover your mouse over the middle of the left line of the remnant shape
and left-click.
6 Left-click
the arrow on the blue, X axis rotation handle to alter the degree of rotation.
7 Bring
the handle counter-clockwise to the 180º location, left-click once to
set that location, then press the Spacebar on your keyboard to finalize.
8 Cancel
out of the Rotate feature.
Now that we have the geometry rotated the way we will want it on our machine, we need to move it the rest of the way to the WCS.
1 Go
to the Utilities menu and select 
Translate.
2 Select
the Sketch/Enter option at the top. This will allow us to set the Start
point with a Pick or Enter method. This will also allow us to set the
End point with a Pick or Enter method. By default, the Sketch/Enter option
will be set to Pick the start point and Enter the End value. Also by default,
the End value will be set to X 0.0000, Y0.0000, Z0.0000. This is convenient
for us since that is where we want to place the corner of our shape.
3 Hover
your mouse over one of the lines of our remnant shape, hold shift on your
keyboard and then left-click to chain-select the entire chain. The entire
chain should now be highlighted.
4 The
next step in the translation process is to pick the start point. Since
we have the end point set to Enter, the next point we pick will be translated
to X 0.0000, Y0.0000, Z0.0000. Hover your mouse over the line on the left
of the shape, hold shift on your keyboard and left-click it once to display
the snap points.
5 Left-click
the snap point on the bottom.
6 Our
remnant shape is now aligned with the WCS as we will have it set to the
Machining Origin on our machine. Press cancel to exit the Translate function.
Now that the sheet is in the proper orientation, we can create our nesting
job and use that as our stock.
1 In
the 
CAM Tree tab of the Data-CAM Tree Manager, right-click
on 
CAM Defaults and select New Job to launch the Nesting
Wizard.
2 Select
Nesting as our Job Type and then click the Nesting Wizard button.
When it comes to picking geometry you can either select geometry that is already open in your CAD window, load geometry from existing files that have not yet been open, or a combination of both. In this case, we will load files.
1 Click
the Load Files button.
2 Navigate
to your C:\BobCAD-CAM Data\BobCAD-CAM V**\Examples folder and select Hole_Dado_Tutorial.bbcd.
3 Since
the hole and dado geometries were separated to their own layer, and named
properly, they have automatically been assigned to the proper operational
groups. Click OK.
4 Click
Next>> to move on to the 
Part
Parameters page.
Now that the parts are all loaded, and the layers have been automatically organized, we will set some basic part parameters.
1 We
only want to nest the first two parts, so click on Part 3 to highlight
it, hold Ctrl on your keyboard and left-click Part 4 highlight it as well.
2 Click
the Remove button and then the Yes button to remove these from the Part
List.
3 Fill
out the part quantities to match the following values.
Part Name |
Quantity |
Part 1 Part 2 |
: 4
: 4 |
4 We
will be leaving the other settings at default. Click Compute at the bottom
left of the wizard.
Now that the nest has been regenerated, we will want to check to see if the change we made to the Nesting Parameters has helped eliminate leftover parts.
1 In
the CAM Tree, right-click on 
Sheets and select Show Summary. Here we can see we have
no leftover parts.
2 Click OK at the bottom of the Nesting Summary to close it.
Now that the nest has been generated and all the parts fit on the sheet, we will check the simulation to visualize the machining order prior to posting the code.
1 Right-click on the Nesting Job and select Simulation
to enter into the simulator to check the final result. Learn more
about the simulation here.
Once the nested result has been finalized it will be time to produce
the code to send to the machine.
1 In
the CAM Tree, Click the plus symbol next to Sheets
to show its contents.
2 Click
the plus symbol next to 
Sheet-1
to show its contents.
3 Right-click
Sheet-1-1 under the main Sheet-1 sheet type and select
Post Sheet.
4 The
code is posted in the Layer-UCS-Post Manager.
5 Right-click
on the code in the Layer-UCS-Post Manager to select Save As or Edit CNC.
With this method, you can either save to a particular file location or
to open in Predator Editor respectively.
This concludes this tutorial.
