Bench work & joints · National 5

Carcase joints

7 cards · 4 quiz · 0 exam
What you're learning in this topic

Learning intention WALT

We are learning about carcase joints, specifically to:

know

  • butt, corner rebate, through housing, stopped housing and dowel joints

understand

  • the stages in cutting a stopped housing

be able to

  • choose a carcase joint for a situation

Success criteria WILF

  • I can identify butt, corner rebate, through housing, stopped housing and dowel joints
  • I can describe the stages in cutting a stopped housing
  • I can choose a carcase joint for a situation

What is a carcase?

A carcase is a box-like construction made from wide boards, like a cabinet, bookcase, drawer or storage box. Joints must hold the boards square and carry shelves.

Buttneeds fixingsCorner rebaterebate takes the board endThrough housingshows at the frontStopped housinghidden from the front
Carcase joints join wide boards. Housings carry shelves: a stopped housing stops short of the front edge, so it is hidden, and the shelf is notched to fit. Housings are cut about one third of the board thickness deep.

Carcase joints

JointNotes
ButtSimple but weak; needs nails, screws, dowels or blocks
Corner rebate (lap)A rebate in one board takes the end of the other: better glue area, hides some end grain, quick to cut
Through housingA groove across one board takes a shelf; the joint shows at the front
Stopped housingThe groove stops short of the front edge, so the joint is hidden: neater, more work
DowelDowels in the edge and face; strong and hidden; needs accurate drilling

Cutting a stopped housing (stages)

  1. Mark the shelf position across the board with a try square and marking knife, using the shelf to get the width.
  2. Gauge the depth (about one third of the board thickness) and the stop on the front.
  3. Chop out a small recess at the stopped end with a chisel so the saw has room to move.
  4. Saw down both sides of the housing to the depth line with a tenon saw.
  5. Remove the waste with a chisel, then level the bottom with a hand router.
  6. Cut a notch in the front of the shelf to fit the stop, and test the fit.

Choosing a carcase joint

  • Shelves: through housing (quick) or stopped housing (hidden).
  • Corners of a box: corner rebate or dowel.
  • Manufactured boards (chipboard, MDF) suit dowels and knock-down fittings better than traditional joints, because their edges crumble.

Key terms

CarcaseA box-like construction made from wide boards
Through housingGroove across a board for a shelf; shows at the front
Stopped housingGroove stops short of the front, so it's hidden
Corner rebateA rebate in one board takes the end of the other
Tool to level the bottom of a housingHand router
Housing depthAbout one third of the board thickness
Joint suited to chipboardDowels or knock-down fittings

Quick check

1. Which housing joint can't be seen from the front?

  1. Stopped housing
  2. Through housing
  3. Corner rebate
  4. Butt
Show answer
A: Stopped housing. The groove stops short of the front edge.

2. Why chop a recess at the end of a stopped housing first?

  1. To make the housing deeper
  2. To give the saw room to move
  3. To hold extra glue in the joint
  4. To decorate the end of the joint
Show answer
B: To give the saw room to move. The saw can't run out of the stopped end.

3. Which joint is best for the corners of a simple box?

  1. Mortise and tenon
  2. Cross halving
  3. Corner rebate
  4. Bridle
Show answer
C: Corner rebate. Corner rebate is a carcase corner joint.

4. Which board joins best with dowels rather than housings?

  1. Pine
  2. Oak
  3. Beech
  4. Chipboard
Show answer
D: Chipboard. Chipboard edges crumble when cut into joints.

Printable worksheet

An I do, we do, you do worksheet for this topic, with a separate answer sheet.

Worksheet (PDF)Answers (PDF)