Hollow Spiral Newel Post - Part 8

In this final video you will see how we use one of Legacy's 5-axis turning / milling CNCs as a copy lathe to turn the cannon ball finial.  You'll also see how we use a two flute straight cutter to mill the shoulder and then blend the profile into the bottom of the ball and mill the round tenon.  Again you see the versatility of Legacy's CNC, on this one project we perform basic turning and ornamental turning as well as milling the square components, joinery and carving all on the same part.


Hollow Spiral Newel Post - Part 7

After milling the square base and top for the newel post we decided to carve a fleur de lys on three of the sides of the top section.  The back side was left flat to receive the hand rail.  Once the carving was complete we dry fit the assembly to make sure everything fit together the way it was designed.


Hollow Spiral Newel Post - Part 6

Machining the Round Mortise

Now you've seen how to draw a round mortise using a CAD program and then create the pocket milling routine using a CAM program, we'll show you how to clamp the part vertically in the machine, setup the work offset, setup the Z-axis using the mobile Smart Tool and machine the round mortise in the end of the base.  Then we add the turning details.


Hollow Spiral Newel Post - Part 5

Using CAD & CAM Software

How many ways are there to mill a round hole?  In this video we will show you one technique using TurboCAD to draw the size of the hole and then import the DXF file into SheetCAM to create the pocket milling program.  The CAM software is where you define the depth of the hole, the depth per pass, the type of cut etc.  These are not the only programs that can be used for this type of work.  You could also use ArtCAM, Aspire, VCarvePro or any number of other CAD/CAM software packages to accomplish the same job.  You could even write a simple code using GCode.


Hollow Spiral Newel Post - Part 4

Machining the Rope Twist Insert

Using Conversational CAM V3.1 we created the code for milling the rope twist on the insert piece and then milling the round tenons on each end of the piece.  This insert piece could feature any design you wish.  We chose to use a rope twist that turns in the opposite direction of the hollow spiral.  This insert piece will bear the weight connect the parts together.