Woodturning Introduction: Difference between revisions

Revision as of 12:08, 6 July 2018

This page is INCOMPLETE and still missing some important information before it can be used as a resource. Please use the "Discussion" feature above or talk to one of the tutors if you would like to help improve it. Thanks!

This is the content required for an introduction to our wood lathe and woodturning tools - reading this does NOT replace the mandatory session with a tutor! It will make it a lot quicker though ;-)

Let's begin! First off, make sure you have read the machine's manual and have watched this video explaining how "catches" happen.

Safety

Dangers

quickly spinning exposed chuck and workpiece
tools, especially skew chisels, can get caught on the workpiece's surface
parting tools can get stuck in the cut due to the high friction
flying shavings, splinters and dust
quickly spinning workpiece might fly at you if it gets loose
belt-based speed selection

Precautions

always make sure all screws and nuts (tool rest, tailstock, spindle) are properly tightened
give the workpiece a test spin by hand to check whether it catches on anything before turning on the motor
wear a face shield
wear a dust mask depending on your material
do NOT wear gloves, loose-sleeve clothing or open long hair!
proceed slowly and smoothly "into" the workpiece - you want to shave material off, not break it!
always let the tool touch the tool rest before the workpiece
make sure the tool is supported on the side you're going to cut with
unplug the machine before opening the belt housing to select a different speed

Demonstration

The tutor will show you these steps in detail:

speed selection
- unplug the lathe
- open the belt housing on the left
- loosen the red screws holding the motor in place (just a little bit, do NOT remove them!)
- lift the motor up to get some slack in the belt
- switch the belt to the desired setup (same position on both pulleys!)
- let the motor go back into its original position and re-tighten the holding screws
- leave the belt a bit looser than you would on the drill press - that way, it can slip when an accident happens!
setting up a workpiece between centers ("spindle work")
- find the center point and mark it on both sides
- remove the drive center from the headstock, set it on the center point you marked on your workpiece, and hammer it "in"
- in case of hardwood, a few relief cuts across the center point may prevent splitting
  - this may also reduce the need for hammering the drive center into the workpiece
- screw the drive center back onto the headstock spindle and move the tailstock as close as the workpiece allows
- drive the tailstock spindle into the workpiece and secure it with the nuts on either side of the tailstock
letting the bevel of a gouge "ride" on the workpiece before the cut

@@ Line 7: / Line 7: @@
 == Safety ==
 === Dangers ===
+* quickly spinning exposed chuck and workpiece
 * tools, especially [[Skew Chisels|skew chisels]], can get caught on the workpiece's surface
 * [[Parting Tools|parting tools]] can get stuck in the cut due to the high friction
@@ Line 14: / Line 15: @@
 === Precautions ===
-* always make sure all screws (tool rest, tailstock, spindle) are properly tightened
+* always make sure all screws and nuts (tool rest, tailstock, spindle) are properly tightened
 * give the workpiece a test spin by hand to check whether it catches on anything '''before turning on the motor'''
 * wear a [[Face Shield|face shield]]
+* wear a [[Dust Mask|dust mask]] depending on your material
 * do NOT wear [[gloves]], loose-sleeve clothing or open long hair!
 * proceed slowly and smoothly "into" the workpiece - you want to ''shave'' material off, not break it!
@@ Line 23: / Line 25: @@
 * unplug the machine before opening the belt housing to select a different speed
-<!--
 == Suggested Reading ==
-Besides these safety notes, you should read <...>
+Besides these safety notes, you should read our page on [[Woodturning Tools|woodturning tools]].
--->
 == Demonstration ==
 The tutor will show you these steps in detail:
 * speed selection
+** unplug the lathe
+** open the belt housing on the left
+** loosen the red screws holding the motor in place (just a little bit, do NOT remove them!)
+** lift the motor up to get some slack in the belt
+** switch the belt to the desired setup (same position on both pulleys!)
+** let the motor go back into its original position and re-tighten the holding screws
+** leave the belt a bit looser than you would on the [[Drill Press|drill press]] - that way, it can slip when an accident happens!
+* setting up a workpiece between centers ("spindle work")
+** find the center point and mark it on both sides
+** remove the drive center from the headstock, set it on the center point you marked on your workpiece, and hammer it "in"
+** in case of [[hardwood]], a few relief cuts across the center point may prevent splitting
+*** this ''may'' also reduce the need for hammering the drive center into the workpiece
+** screw the drive center back onto the headstock spindle and move the tailstock as close as the workpiece allows
+** drive the tailstock spindle into the workpiece and secure it with the nuts on either side of the tailstock
 * letting the bevel of a gouge "ride" on the workpiece before the cut
 [[Category:Introductions]]