Lathe - Jet JWL-1236

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Description

A lathe for woodworking. The lathe spins a block of wood, allowing the user to use cutting tools to shape it into a round object.

Specifications

SWING OVER BED 6"
SWING OVER TOOL REST BASE 4-3/8"
DISTANCE BETWEEN CENTERS 35"
SPEEDS 550 - 3000 RPM
SPINDLE NOSE 1" - 8 TPI
HOLE THROUGH SPINDLE 3/8"
HEAD & TAILSTOCK TAPER MT-2
RAM TRAVEL 2-1/4"
SPINDLE CENTER TO FLOOR 41"
MOTOR 115V, 3/4 HP
WEIGHT 185 LBS

Safety Rules

Before Starting

  • Verify you are not wearing gloves, long sleeves, dangling clothing (necklaces, hoodie strings), dangling hair.
  • Wear safety glasses or a face shield.
  • Do not over-tighten bolts. Snug is sufficient.
  • Verify cutting tools are sharp.
  • Spin chuck by hand before turning on. Verify chuck and material spin freely without contacting anything else. When starting, stand to the side in case the material does fly off.
  • Verify material is secure. Whenever possible, use tailstock to to support the work piece.

During Use

  • Do not leave a running lathe unattended. If the lathe is on, your eyes should be on the work piece.
  • Always cut at the centerline of the wood, or higher.
  • Keep speeds low when the wood is imbalanced.
  • Cut downhill, from the thicker part of the wood to the thinner part.

Documentation

NOTE: These materials are not a substitute for hands-on training with an experienced user.

Notes

  • Note 1.

Chuck and Headstock Install/Remove

  • Chuck and faceplate removal: Insert allen key or pin into the side of the shaft to prevent it from spinning. Unscrew the chuck or faceplate.
  • Tapered headstock tool removal: Insert draw bar through left side of headstock. Prepare to catch tapered tool. Gently tap on draw bar until tapered tool comes loose.
  • Tapered headstock tool insertion: Ensure spindle and tool taper are clean. Insert tool into spindle taper with a slight amount of force. Do not hammer in.
  • Tailstock center and drill chuck installation: Ensure male and female tapers are clean. Extend tailstock taper slightly. Gently tap live center or drill chuck into place.
  • Tailstock center and drill chuck removal: Fully retract tailstock until center/chuck pops out. Be ready to catch it!

Rounding/Centering the Wood

  • For round wood, use a 45 degree center finder to mark two diameters, thus finding the center point.
  • For non-round wood, approximate the center, then turn it slowly with a roughing gouge until it spins smoothly.

Spindle Turning

Spindle turning requires that the wood be trapped between a drive at the headstock (chuck or spur drive) and a live center in the tailstock. Calipers can be used to match diameters.

Pen Turning

Pen turning is generally done on a mandrel with bushings that are specific to a pen kit. They set the diameter of each part. The basic steps are:

  1. 1. Center drill the blank.
  2. 2. Glue in a tube.
  3. 3. Square the end
  4. 4. Assemble the blanks and bushings on the mandrel.
  5. 5. Turn the wood to size.
  6. 6. Sand
  7. 7. Apply finish.
  8. 8. Press together.

Bowl Turning

Typically, bowls are turned shaping their outside profile first. This allows you to use a faceplate screwed to the waste on the inside of the bowl while the outside face and a recess for the chuck to grab are cut. Keep a tailstock center on the wood as long as possible, go at a fairly slow speed, especially while the bowl is not balanced. Be sure the recess for the chuck allows the jaws to grab the full depth. Then you can turn it around and cut the inside, being sure never to cut below center of the upward turning side.

You can turn the inside first if you use the large jaws of the chuck to grip the outside edge of the bowl, but this is best only for cleaning up the base and finishing.

Drilling

Mount the wood in the chuck and put a drill chuck in the tailstock. Be sure the drill bit is tightened well. Lock the tailstock in place and advance the but with the handwheel. The firs part of the drilling should be done with light pecks to be sure the but doesn't flex. Retract the but regularly to clear any sawdust from the hold - if it binds it will snap the bit.

Sanding

Sanding can be done on the lathe. Start at low grits and work your way up to fine grits (don't make large jumps in grit sizes; this will take more time, not less!). Always be aware of what will happen if the sandpaper wraps around the turning - will it take your hand with it? Be sure your sleeves are well away from the work.

Clean up

Turning is messy. Vacuum up all chips. Put all tools away. Sharpen tools for the next person.

Reference