Surfacing Rough Lumber

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Surfacing Rough Lumber

• Woodworking 2,3,4

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Materials

• Surfacing Rough Lumber Worksheet
• Tape Measure
• Square
• Combination
• Tri-Square
• Scrap Lumber

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Question?

• Write a sentence defining the term
• Four-Square

Be prepared to Read it to the Class
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Building an Accurate Foundation

• Craftsmanship depends on tight fitting, accurate
  joinery. Without observing the fundamental steps
  in basic stock preparation, this is impossible.
  That is why it is necessary to mill the boards we
  use four-square before cutting joints or shaping
  them.

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Four-Square

• A board that is four-square is perfectly straight
  and flat, where each side is at right angles (90
  degrees) to its adjacent sides.

Face
Edge
End
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Starting Point

• The chief cause of inaccuracy in stock
  preparation is a failure to establish generalized
  reference points. Slight machine errors can be
  mitigated by measuring, marking, cutting, planing
  or performing any other action using the same
  corner as your starting point. This corner is
  bound by the face side and face edge of the
  board.

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Step One

• Cross Cut to Rough Length if needed
• The rules change when cutting twisted, cupped and
  warped lumber before Jointing
• Rip to Rough Width if needed
• Use Band Saw to rip twisted, cupped, and warped
  Lumber without a straight Edge

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Dealing with a Cupped Board
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Dealing with a Bowed Board
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Dealing with a Crooked Board
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Dealing with a Twisted Board
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Dealing with a Knotty Board
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Step Two

• At the beginning of the stock preparation process
  it is necessary to inspect the lumber and choose
  a face side and face edge.
• Face Side ? Best Face that will be seen in your
  Finished Project and Best Grain Direction
• Face Edge ? Cleanest Adjacent Edge with Best
  Grain Direction

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Grain Direction
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Step Two
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Step Three

• Joint Face (Cup Side Down)
• Joint Edge Square to Face Side

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Step Three Re-mark
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Perfectly Square
Double Check With a Square
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Step Four

• Surface Plane the Second FACE parallel to the
  First
• Find Thickest part of Lumber
• Measure in Several Places

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Step Four (cont.)

• Pass ALL boards through at the SAME time
• Everything must be a UNIFORM thickness
• Even if you go below your planned Thickness
• Flush, tight fitting joints require uniform
  thickness of all the boards
• DO NOT PLANE TO FINAL THICKNESS IF YOU NEED TO
  GLUE-UP BOARDS

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Step Five

• Rip ALL boards to FINISHED WIDTH
• Rip ALL the same widths at the SAME time
• Do not adjust the fence
• Set the Fence to 1/32 greater than your Finished
  Width

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Step Five (cont.)
1/32 Greater
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Step Six

• Square Up one End
• Make sure you place the Original Face Edge
  AGAINST the Fence
• Use you Square Marks
• Make sure you place Original Face Side against
  the Table
• Use you Square Marks

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Step Seven

• Crosscut the other End to the Finished Length
• Cut ALL same length pieces at the SAME time
• Use a Stop Block to insure everything is exactly
  the SAME

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The Result
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Step Six (cont.)
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Textbook Work

• Chapter 23 Worksheet
• Page 357
• Worksheet Handout

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(No Transcript)
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Jointer Intro

• Demonstration
• Safety Test
• Observation

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Surface Planer Intro

• Demonstration
• Safety Test
• Observation