Also the rear chip deflector (A, Fig. 33) must be set properly. There must be no contact between the pattern knife and the chip deflector. Rotate the cutterhead by hand to make sure there is clearance. This is especially important when the operator has inserted a pattern knife and left the planer blades in the cutterhead. The chip deflector must be moved to clear the pattern knife.
Double check all gib screws for tightness before operating the machine. If the chipbreaker is damaged or worn it must be replaced.
Installing Bedboard
The knives are made so the extreme cutting tips can cut into the wood bedboard by approximately 1/16”. This is necessary to eliminate rough edges and for final sizing. Always use a bed board so the knife does not come into contact with the cast iron bed of the planer.
Once the bedboard is securely mounted, the guides must be adjusted so they are in line with the pattern knife. Proper adjustment of the guides will insure quality cut moldings.
1.To adjust the guides, lower the bed and place a board of correct width to be molded under the cutterhead.
2.Loosely adjust the guides to the board. Rotate the cutterhead by hand and see if the pattern knife will line up with the board. Adjust accordingly until the pattern knife and board are lined up as in Figure 34.
3.When properly adjusted, firmly tighten the bed guides.
NOTE: On some pattern knives the cutter trims a small portion of the width away as it cuts the pattern. The outfeed guides on the bedboard must be adjusted to compensate for the decreased width of the molding.
Face Molding with pattern knives
The art of creating quality molding requires planning your molding operations prior to starting. The depth of cut can dictate the smoothness of the finish. Remember, a light cut creates a finer finish than a heavier cut.
Always
Figure 33
Figure 34
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