Problem

Possible Cause(s)

Remedy

Sanding Disc wobbles

Disc not secure on spindle
Worn nylon drive
Disc warped
Spindle knob loose

Tighten setscrew in hub Replace nylon drive
Replace Disc
Tighten setscrew in knob

Sandpaper won't stick to Disc

Disc dirty

Adhesive dirty or worn out

Clean Disc with rubbing alcohol

Replace sandpaper

Sandpaper tears or wears out quickly

Using too much pressure and/or sanding for too long in one spot

Sandpaper gets wet, then dries

Sandpaper loaded with sawdust

Use light, even pressure. Keep stock moving.

Replace sandpaper

Clean sandpaper with cleaning stick or replace.

Sandpaper loads-up with sawdust

Stock is wet, oily, glued or painted

Sanding for too long in one spot

Using too much pressure

Clean sandpaper with cleaning stick

Keep stock moving

Use light, even pressure

Wood burns

Sandpaper worn out

Using too much pressure and/or sanding for too long in one spot

Sandpaper loaded with sawdust

Speed too high

Using grit that's too fine

Replace sandpaper

Use light, even pressure. Keep stock moving.

Clean sandpaper with cleaning stick

Reduce speed

Use coarser grit sandpaper

Wood lifts from table or chatters

Sanding on upward motion side of disc

Stock not held properly

Table too far from disc

Center of sanding Disc above table

Warped Disc

Sand on downward motion side of Disc

Hold stock firmly on table

Move table closer to Disc

Set table height just above center of Disc

Replace Disc

Work jams between Disc and table

Table too far from Disc

Move table closer to Disc

Angle on sanded edge not as indicated

Table not square to Disc

Table and/or Disc shifts as you work

Miter Gauge not set properly

Stock not held properly

Miter Gauge face warped

Align table

Secure all locks

Adjust Miter Gauge

Hold stock firmly on table

Replace Miter Gauge face

Sanded surface ribbled or scored

Grit too coarse

Warped Disc

Stock not held properly

Table and/or Disc shifts

Sanding too long in one spot

Use finer grit sandpaper

Replace Disc

Hold stock firmly on table

Secure all locks

Keep stock moving

Raised area on sanded surface

Center of sanding disc above table and sanding for too long in one spot

Set table height just above center of Disc and keep stock moving

Stock difficult to sand

Sandpaper worn

Grit too fine

Stock very hard

Sandpaper loaded with sawdust

Replace sandpaper

Use courser grit

Use slower speed and/or coarser grit

Clean sandpaper with cleaning stick