COLODAILY / ASSEMBLY PART

Build a pitched-roof chimney

Fold and glue one corrugated wrap into an open-top chimney. Two angled feet seat it on a sloping roof.

  • 26 × 21 mmWidth across the slope × length along the ridge
  • Single-wall corrugated board 2 mmOne blank
  • A4 templates1 template on 1 sheet at actual size
  • White PVA glueFor the folded seam
Open Studio ↗Prepare materials & tools ↓
A folded brick-brown chimney with an open rim and two angled feet

Prepare materials and tools

  • Reused boxLook for clean, dry 2 mm single-wall corrugated board.

    See usable box types

    Look for 2 mm single-wall corrugated board. Lay the full-size template on a flat panel before cutting.

    • Amazon or delivery boxUse a flat side away from tape, old folds, and crushed corners.
    • Grocery shipping boxChoose a clean, dry panel with one wavy layer and no ventilation holes in the cut area.
    • Clean pizza boxCheck the lid for one wavy layer and matching thickness. Use an area free of grease and moisture.
    • Small moving boxLook at the edge first. Use it only if it has one wavy layer and matches the kit thickness.
  • Craft knife & matUse a mat under the board while cutting.
  • Pencil, ruler & scorerUse a blunt scorer for folds and calipers to check board thickness.
  • A4 templatesPrint at 100% and check the 100 mm ruler before tracing.
  • White PVA glueUse a thin coat and test the bond on an offcut.

Check the cut edge. Look for one wavy layer between two flat liners. The whole blank needs a flat area of 104.5 × 76.7 mm. Check the board →

Choose your board and open the A4 templates ↓

Materials and A4 templates

Print at 100% / Actual size and check that the printed ruler measures 100 mm.

Open A4 templates · 1 sheet

Try the corner fold on a scrap of the same board. Use a blunt scorer and keep all six creases on the connected blank.

One cut piece

Cut CH once. Score the three corners, the seam flap, and the two angled feet. Use the A4 sheets to trace at actual size.

Chimney wrap ×1
CH
Part details

Technical drawings

Arrows show dimensions in millimeters. Coordinates in the tables start at the lower-left corner of the cut blank. Use the A4 templates for actual-size tracing.

Chimney wrap · CH

104.48 × 76.71 mm blank · 2 mm board

104.48 mm76.71 mm1233234

Solid brown · cutDashed purple · score and fold

  1. Cut around the solid outer outline.
  2. Score the dashed line. Fold foot inward.
  3. Score the dashed line. Fold corner 90°.
  4. Score the dashed line. Fold seam inside.
Exact coordinates and edge lengths

Measure from the lower-left corner of the blank. X runs right and Y runs up. The tables have their own row numbers. Join the outer edges in order.

Fold lines
LineInstructionFrom X, YTo X, Ymm
1fold foot inward4.48, 28.4626.48, 3.7133.11
2fold corner 90°28.48, 1.4628.48, 76.7175.25
3fold corner 90°49.48, 1.4649.48, 76.7175.25
4fold foot inward51.48, 3.7173.48, 28.4633.11
5fold corner 90°75.48, 30.7175.48, 76.7146
6fold seam inside96.48, 30.7196.48, 76.7146
Outer cut edges
EdgeFrom X, YTo X, Ymm
12.48, 30.714.48, 28.463.01
24.48, 28.460, 22.217.69
30, 22.2119.74, 029.71
419.74, 026.48, 3.717.69
526.48, 3.7128.48, 1.463.01
628.48, 1.4649.48, 1.4621
749.48, 1.4651.48, 3.713.01
851.48, 3.7158.21, 07.69
958.21, 077.95, 22.2129.71
1077.95, 22.2173.48, 28.467.69
1173.48, 28.4675.48, 30.713.01
1275.48, 30.7196.48, 30.7121
1396.48, 30.71104.48, 33.218.38
14104.48, 33.21104.48, 74.2141
15104.48, 74.2196.48, 76.718.38
1696.48, 76.712.48, 76.7194
172.48, 76.712.48, 30.7146

Assemble the chimney

Read through the steps here, or rotate the exploded model and follow the build in Studio ↗.

1. Cut and score the wrap

Trace CH onto 2 mm single-wall board. Cut the solid outline. Lightly score the three corners, the seam flap, and both sloped feet.

View in Studio ↗

2. Dry-fold the four walls

Fold the three corner scores to 90°. Tuck the narrow seam flap inside the first wall. Check that the top rim is level and the sides form a rectangle.

View in Studio ↗

3. Apply glue to the seam flap

Open the seam enough to brush a thin coat of PVA on the blue face. Keep the roof feet free.

View in Studio ↗

4. Close and square the chimney

Press the seam flap against the inside of the first wall. Square the corners and hold the overlap until the glue grips.

View in Studio ↗

5. Fold both roof feet inward

Fold the two feet in along their angled scores. Their undersides should sit in the same plane. Let the seam set before fitting the chimney to the roof.

View in Studio ↗

Connection spec for project designers

Reserve a clear 39.14 × 21 mm patch on the roof surface. This chimney seats on a 9:8 rise-to-run pitch (48.37°).

Keep the roof panel intact. Apply PVA to the underside of both feet when the host guide calls for installation.

View machine-readable library connections →

Dry-fit the seam and check both feet against a matching roof slope before gluing.