ST1008 Mini Wood Lathe
-29-
PROBLEM
POSSIBLE CAUSE
CORRECTIVE ACTION
Vibration noise while
machine is running; noise
remains constant when
speed is changed.
1. Dented fan cover on motor.
2. Spindle cover loose.
3. Spindle cover bent or dented and is
making contact with the motor pulley
or belt.
1. Replace or adjust fan cover. Inspect motor fan and
replace if damaged.
2. Tighten the spindle cover lock handle; if necessary install
a soft, vibration dampening material (between the
spindle cover and the headstock casting.
3. Remove spindle cover and inspect the inside for dents,
bends, or indications of rubbing. Tap out the dent with
a rubber mallet, bend back into proper shape, or shim
spindle cover away from the motor pulley.
Excessive vibration.
1. Workpiece mounted incorrectly.
2. Workpiece warped, out of round, or is
flawed. Chuck at fault.
3. Spindle speed is set too fast for
mounted workpiece.
4. Lathe is resting on an uneven surface.
5. Motor mount bolts are loose.
6. Belt is worn or damaged.
7. Spindle bearings are worn.
1. Re-mount workpiece, making sure that centers are
embedded in true center of workpiece.
2. Cut workpiece to correct, or use a different workpiece.
Replace chuck if at fault.
3. Reduce spindle speed.
4. Shim stand or adjust feet on stand to remove any
wobbling.
5. Tighten motor mount bolts.
6. Replace belt.
7. Replace spindle bearings.
Chisels grab or dig into
workpiece.
1. Tool rest set too low.
2. Tool rest set too far from workpiece.
3. Wrong chisel/tool being used.
4. Chisel/tool dull.
1. Set tool rest higher. See Page 19 for how to properly set
the tool rest height.
2. Move the tool rest closer to the workpiece. See Page 13
for the proper workpiece/tool rest clearance.
3. Use the correct chisel/tool; educate yourself by reading
books, trade magazines, or seeking help from an
experienced lathe operator.
4. Sharpen or replace chisel/tool.
Bad surface finish.
1. Wrong spindle speed.
2. Dull chisel or wrong chisel being used
for the operation.
3. Belt is worn, damaged, or loose.
1. Use trial-and-error to find a better spindle speed.
2. Sharpen chisel or try a different chisel.
3. Inspect belt. tighten or replace as necessary.
Tailstock moves.
1. Tailstock mounting bolt loose.
2. Too much clamping pressure applied
by tailstock.
3. Bed surface is oily or greasy.
1. Tighten mounting bolt.
2. Apply less clamping pressure with tailstock.
3. Clean bed surface to remove excess oil/grease.
Can't remove tapered tool
from tailstock barrel.
1. Tailstock barrel had not retracted all
the way back into the tailstock.
2. Debris was not removed from taper
before inserting into barrel.
1. Turn the barrel handwheel until it forces taper out of
barrel.
2. Always make sure that taper surfaces are clean.
Operation
