Back Relief Molding; Tongue And Groove Molding; Maintenance; Lubrication - Jet JPM-13CS Operating Instructions And Parts Manual

12. Run all stock to be molded through the
machine at this time.
molding several boards with the same
profile and have to make several passes to
complete the profile, you must run all
boards through at each setting. This
assures all stock will match the desired
shape. This is especially important when
splicing molded boards together such as
crown molding or baseboards.

13.2 Back Relief Molding

Back relief molding is used to create a better fit
over irregular surfaces. With less wood contact, the
molding matches irregular surfaces more easily.
The back relief cut is formed on the work piece
first; then the workpiece is molded to its finished
shape. (Fig. 23)
Figure 23

13.3 Tongue and Groove Molding

Tongue and groove molding is accomplished in the
same manner as other types of molding. Keep in
mind the edge guide must be taller to adequately
support the work piece. The edge guides must be
set 3/4" below the lowest point the cutter will travel.
Cutting the groove first allows adequate support
when cutting the tongue (Figure 24).
Note: If you are
18
Figure 24

14.0 Maintenance

Disconnect machine
(unplug).
•
Keep anti-kickback pawls clean and operating
smoothly to prevent injury due to kickback.
•
Lubricate table with
automotive paste wax for smoother feeding of
workpiece. Do not use a lubricant that will
affect the workpiece's ability to accept stains
or protective finishes.
•
Replace feed rollers, blades, and cutter knives
if they become damaged. Sharpen blades and
cutters when they become dull.

14.1 Lubrication

Disconnect machine
(unplug).
•
Coat the elevating screws with light automotive
bearing grease once a month.
•
Lightly coat the chain drive and gears with light
automotive grease once a month.
•
Lubricate four columns with 10W machine tool
oil once a month.
from power source
furniture wax or
from power source