Grizzly G8749 Owner's Manual page 23

Operation
symptom possible Cause
deep sanding 1. sandpaper grit too coarse.
groove or scars in
2. Workpiece sanded across grain.
workpiece.
3. Workpiece
abrasive too great.
4. Workpiece held too still against sanding
abrasive.
abrasive grain rubs 1. sandpaper has been stored in an incorrect
off the sandpaper.
environment.
2. sandpaper has been folded or smashed.
sanding surfaces 1. Workpiece
clog quickly or burn.
abrasive too great.
2. sanding softwood or stock with high
residue.
Burn marks on 1. sandpaper grit too fine.
workpiece.
2. Workpiece
abrasive too great.
3. Workpiece held too still against sanding
abrasive.
glazed surface on 1. sanding wet stock.
workpiece.
2. sanding stock with high residue.
W o r k p i e c e 1. Workpiece not correctly supported.
frequently pulled out
of your hands.
2. Engaging workpiece with the sander on a
leading corner.
3. starting sander with workpiece against
sandpaper.
g8749 drum/Flap sander
pressure against sanding
pressure against sanding
pressure against sanding
possible solution
1. use finer grit sandpaper.
2. sand with the grain.
3. reduce pressure applied to the workpiece against
the sanding abrasive.
4. Continuously move workpiece back-and-forth across
the sanding abrasive surface.
1. store sandpaper products away from extremely
cold or hot temperatures and in a dry, protected
location.
2. store sanding sleeves or rolls so they are not
smashed or bent; store sandpaper sheets flat.
1. reduce pressure applied to the workpiece against
the sanding abrasive.
2. use different stock or accept the characteristics of
the stock and plan on cleaning/replacing sandpaper
frequently.
1. use coarser grit sandpaper.
2. reduce pressure applied to the workpiece against
the sanding abrasive.
3. Continuously move workpiece back-and-forth across
the sanding abrasive surface.
1. properly dry stock before sanding so moisture
content is less than 20%.
2. use different stock or accept the characteristics of
the stock and plan on cleaning/replacing sandpaper
frequently.
1. hold workpiece firmly with both hands and engage
with sander slowly; use additional holding/supporting
devices for larger workpieces.
2. start sanding workpiece on a trailing corner.
3. start sander before engaging it with the workpiece.
-21-