Multi Axis Turning with Hand-Chased Threads
Multi Axis Turning with Hand-Chased Threads
2 diameter x 3 ½ tall
Materials:
1)
Box: 2 x 2 ½ sq., a tight-grained wood that will accept threading.
Hard Maple works well.
2)
Handle: Ύ sq. x 4, contrasting hardwood such as Blackwood,
Cocobolo etc.
3)
Finial: 5/8 sq. x 2 ½, use the same wood used for the box.
4)
Collet Chuck: ½ x 2 ½ sq., hardwood such as Maple
5)
Eccentric
Chuck: 1 ½ x 2 ½ sq., hardwood such as Maple (2 are needed)
1)
½ Roughing Gouge
2)
½ Spindle Gouge (fingernail grind)
3)
3/8 Bowl Gouge (side grind)
4)
Parting Tool (standard & thin kerf)
5)
Small Hollowing Tools (3/8 opening, allen wrenches work well)
6)
Thread Chasers 20 TPI (I grind down a Ό-20 tap to thread small
openings)
7)
Vernier Calipers
Turning
Steps:
1)
Mount box blank between centers and round it to a 2 diameter, then
turn a 1 tenon on one end for mounting in the Eccentric chuck. (Details
located on separate page)
2)
Set the Eccentric chuck to 5/16 off-center and turn the face of the
box, turn the top of the box concave up to a slight point which will be
off-center. (3/8 Bowl gouge)
3)
Switch the chuck back to center and start turning the spherical shape on
the bottom, leaving enough material for hollowing the box. (Spindle gouge)
4)
Switch the chuck to the 3/16 off-center and drill a 3/8 hole.
Using Allen wrenches as hollowing tools hollow out the inside of the box.
5)
Using a modified Ό-20 tap, chase the threads into your opening.
6)
Using a spindle gouge slightly taper your opening for the handle to
seat.
7)
Switch the chuck back to center and complete the spherical bottom of the
box. Use a thin kerf-parting tool
to cut it off and sand the remainder of the bottom.
8)
Turn a short #2 taper on the handle blank and mount it into the
headstock. Bring your tailstock up
for support.
9)
Round the handle blank and turn a tenon on the tailstock end 1/16
larger than the box opening.
10)
Using a 20 TPI chaser, chase the threads on to the handle, using the
completed base to get the correct fit.
11)
Shape the handle to your liking and part off, drill a 1/8 hole to
accept the finial.
12)
Turn a ½ tenon on the finial blank.
13)
Using an Eccentric chuck (Details located on separate page), mount the
finial blank and set it 1/8 off-center.
Using the ½ Roughing gouge turn a cove cut to a point.
14)
Reset the Eccentric chuck to center and turn a half bead down to 1/8.
Turn a 1/8 tenon and part off.
15)
Glue finial into the handle.
16)
You should now be able to touch the edge of the box and watch it gently
rock until it comes to its final resting balance.
17) Apply the finish of your choice and enjoy.