Using A Spoilboard - Grizzly G0895 Owner's Manual

Using a Spoilboard

A spoilboard should be used with any operation
in which the cutter cuts completely through the
workpiece. Typically, a spoilboard is made of MDF
that has been surfaced perfectly flat. Even a new
piece of material should be surfaced before use.
The vacuum table can be used with an MDF
spoilboard that is properly prepared. The vacuum
pulls air through the porous spoilboard, causing
workpieces to be secured to the top of the spoil-
board.
Moisture will swell and warp MDF spoil-
boards. Using a warped spoilboard will result
in damaged or inaccurately cut workpieces
and could result in damage to the machine.
If liquid is spilled on spoilboard, it must be
dried and resurfaced, or replaced.
Preparing a Vacuum Spoilboard
Items Needed
MDF ⁄ " (sized for table or workpiece) ............. 1
3
4
Sealant
(epoxy or rubberized paint) ................ As Needed
To create a vacuum spoilboard:
1. Surface both sides of MDF to remove at least
0.5mm of sealant. See Surfacing on Page
35 for instructions on how to use your G0895
to surface the spoilboard.
2. Seal all four edges of spoilboard using epoxy
or rubberized paint.
Note: Spoilboards can be resurfaced and
reused until thickness is reduced to approxi-
mately ⁄ " or less.
1
4
-34-
Clamping Spoilboard
Clamps can be used in combination with the vac-
uum table if spoilboard does not create a strong
seal with the vacuum table.
Items Needed
MDF (sized for table or workpiece) .................. 1
Clamp Set, Double-Sided Tape,
or Wood Screws ................................ As Needed
To clamp a spoilboard:
1. Clamp surfaced spoilboard to machine
bed using included hold-down clamps (see
Figure 39). If vacuum table is used, secure
spoilboard as described in Using Vacuum
Table on Page 32.
Qty
Vacuum Table
Figure 39. Spoilboard clamped to router bed.
2. Secure workpiece to spoilboard.
Note: Depending on the needs of the
workpiece and G-code, it could be appro-
priate to use additional hold-down clamps,
double-sided tape, or mount the workpiece
directly to the spoilboard with screws. If
vacuum table is used, the suction through
the spoilboard may be sufficient to secure
workpiece. Always verify workpiece is secure
before beginning work operations.
Workpiece
Spoilboard
Model G0895 (Mfd. Since 01/20)
Qty
Clamp