Jet JJP-8BT Operating Instructions And Parts Manual

Also see for JJP-8BT: Specifications Operating instructions and parts manual

Contents

20BevelingBeveling an edge is the same operation as edgejointing, except that the fence is tilted to aspecified angle.! Make certain material being beveled is over12 inches long, more than 1/4 inch thick and1 inch wide.To bevel:1. Use a bevel gauge to determine the desiredangle. Then set the fence to the same angle.2. Inspect stock for soundness and graindirection (refer to Direction of Grain onprevious page).3. Set the infeed table for a cut ofapproximately 1/16.4. If the board is bowed (curved), place theconcave edge down on the infeed table.5. Feed the stock through the cutterhead,making sure the face of the stock iscompletely flat against the fence and theedge is making solid contact on the infeedand outfeed tables (Figure 25).For wood wider than 3 inches – hold withfingers close together near the top of thestock, lapping over the board and extendingover the fence.For wood less than 3 inches wide – usebeveled push blocks and apply pressuretoward the fence. Keep fingers near top ofpush block.Several passes may be required to achieve fullbevel.Figure 25Planer OperationsDepth of CutThickness planing refers to the sizing of lumber toa desired thickness while creating a level surfaceparallel to the opposite side of the board. Boardthickness that the planer will produce is indicatedby the scale (see Table Height Adjustment onpage 13). Preset the planer to the desiredthickness of the finished workpiece using thegauge. The depth-of-cut is adjusted by raising orlowering the planer table (D, Fig.14) using theadjustable handle (C, Fig. 14).! The quality of thickness planing depends onthe operator's judgment about the depth ofcut.! The depth of cut depends on the width,hardness, dampness, grain direction andgrain structure of the wood.! The maximum thickness of wood that can beremoved in one pass is 5/64" for planingoperations on workpieces up to 5-1/2” wide.The workpiece must be positioned away fromthe center tab on the rollercase to cut 1/8”.! The maximum thickness of wood that can beremoved in one pass is 1/16” for planingoperations on workpieces from 5-1/2” up to8" wide.! For optimum planing performance, the depthof cut should be less than 1/16”.! The board should be planed with shallowcuts until the work has a level side. Once alevel surface has been created, flip thelumber and create parallel sides.! Plane alternate sides until the desired thick-ness is obtained. When half of the total cuthas been taken from each side, the boardwill have a uniform, moisture content andadditional drying will not cause it to warp.! The depth of cut should be shallower whenthe workpiece is wider.! When planing hardwood, take light cuts orplane the wood in thin widths.! Make a test cut with a test piece and verifythe thickness produced.! Check the accuracy of the test cut beforeworking on the finished product.Precautions! A thickness planer is a precision wood-working machine and should be used onquality lumber only.! Do not plane dirty boards; dirt and smallstones are abrasive and will wear out theblade.! Remove nails and staples. Use the planer tocut wood only.! Avoid knots. Heavily cross-grained woodmakes knots hard. Knots can come lose andjam the blade. Any article that encountersplaner blades may be forcibly ejected fromthe planer creating a risk of injury.