Powermatic Essential Techniques for Planer Users

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Rabbet

A rabbet is a rectangular cut on the corner of a molding, as shown in Figure 38.

It is commonly used where pieces of wood are being butted against and/or overlapped, such as in ship lap and bevel siding. Always set your guide against the side being rabbeted. The rabbet cut should be completed before the exposed side of the molding is finished.

Parting Bits

Parting bits will do a very smooth job of sawing soft wood up to 3/4” thick. They are installed the same as custom pattern knives with the planer blades removed. More than one parting bit may be used at one time. They can be placed as close as 3/4” apart, and up to 10-7/8” apart. Parting bits must be used in conjunction with a bedboard as shown in Figure 39, as the bits will cut into the bedboard so that they will cleanly part the wood stock.

Crowns, Beds and Coves

Crowns, beds, and coves are made with custom pattern knives. These moldings are made in two passes. The molding is cut on both the top and the bottom of the wood piece. See Figure 40. Pass one is for the bottom. The beveled side created mounts against the wall and ceiling. Pass two creates the top which is the decorative shape that is exposed to the eye when the molding has been mounted.

Multiple Custom Knife Use

Many operators who have continuous short runs of several different patterns save set-up time by installing more than one set of knives in the cutterhead at the same time. You can change from one pattern to another simply by changing the guides. This is a great time saver since it eliminates removing and installing another set of knives for a short-run.

At the same time, the cutterhead is producing usable molding from what would otherwise be waste stock. If the width of the pattern being produced is 4-1/2” and the stock is a full 5-1/2” wide, you would have a strip of waste stock. This stock can be molded in a separate run or at the same time that the original pattern is being run, simply by butting another set of knives against the original pattern knives. This produces two different patterns simultaneously.

When the stock is presized and you wish to run multiple patterns, it is recommended that the knives be staggered by placing only one knife per slot, as shown in Figure 41. This helps reduce load, vibration, and noise.

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Figure 38

Figure 39

Figure 40

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Contents Walter Meier Manufacturing Inc Part No. M-0460264Warranty and Service More InformationTable of Contents Page Page Introduction Specifications Turn = 1/16Contents of the Shipping Container Installation and AssemblyUnpacking Installing Handwheel Installing Dust ChuteElectrical Connections Extension Cords AdjustmentsPlaner Knife Replacement Belt TensionSharpening Knives Planer’s Feed System Depth of CutFeed Rate Anti-Kickback FingersInfeed Roller Chipbreaker Leveling Cutterhead with Bed Caster Lock Interlock SwitchOperation Kinds of WarpPlaning to Desired Thickness Thickness Planing StepsPattern Knives Introduction to MoldingPlaning for Finish Optional Bedboard and GuideHomemade Featherboard Installing Single Pattern KnivesHomemade Bedboard Homemade Guide Set-Up for Edge MoldingInstalling Three-Knife Set Pattern Knife ClearanceInstalling Bedboard Face Molding with pattern knivesEdge Planing Bedboard must be installed on the planer when edge planingEdge Molding with pattern knives Common Molding ApplicationsRabbet Maintenance LubricationTrouble Probable Cause RemedyOne cause of overload trips which is Trouble Probable Cause Remedy Troubleshooting Operating Problems Replacement Parts Parts List Base Assembly Index No Description Size QtyBase Assembly Parts List Gearbox Assembly Index No. Part No Description Size QtyGearbox Assembly Parts List Stand Assembly Stand Assembly Parts List Cutterhead, Hood and Table Assembly PM15-HP Cutterhead, Hood and Table Assembly Electrical Connections Page New Sanford Road LaVergne, Tennessee Phone
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