Grizzly G0679 Owner's Manual page 36

Operations
symptom
Machine vibrates excessively (non-motor
related).
Sanded surface not square.
Deep sanding grooves or scores in
workpiece.
Abrasive grit rubs off the belt easily.
Sanding belt surface clogs quickly or
burn.
Burn marks on workpiece.
Glazed sanding surfaces.
Belt rubs on machine frame.
-34-
possible Cause
1. stand not stable on floor.
2. incorrect sanding belt tension.
3. Broken/defective sanding belt.
1. table not perpendicular to belt.
1. sandpaper too coarse for the desired
finish.
2. Workpiece sanded across the grain.
3. too much sanding
workpiece.
4. Workpiece held still against the belt.
1. sanding belt has been stored in an
incorrect environment.
2. sanding belt has been folded or
smashed.
1. too much pressure
workpiece.
2. sanding softwood.
3. sanding belt grit too fine.
1. using too fine of sanding grit.
2. using too much pressure.
3. platen press/workpiece held still for
too long.
1. sanding wet stock.
2. sanding stock with high residue.
1. tracking incorrect.
possible solution
1. level machine.
2. Make sure tension is correct (page
27).
3. replace sanding belt (page 27).
1. adjust 90° stop (page 35).
1. use a finer grit sanding belt.
2. sand with the grain.
force on 3. reduce pressure on workpiece while
sanding.
4. Keep workpiece moving while sand-
ing on the belt.
1. store sanding belt away from extreme-
ly dry/hot or damp/wet temperatures.
2. store sanding belt flat, not folded or
bent.
applied to 1. reduce pressure on workpiece while
sanding.
2. use different stock. or, accept the
characteristics of the stock and plan
on cleaning/replacing belts frequent-
ly.
3. use coarser grit sanding belt.
1. use a coarser grit sanding belt.
2. reduce pressure on workpiece while
sanding.
3. do not keep platen press/workpiece
in one place for too long.
1. dry stock properly before sanding.
2. use different stock. or, accept the
characteristics of the stock and plan
on cleaning/replacing belts frequent-
ly.
1. adjust belt tracking (page 36).
g0679 stroke/Edge sander