Hydrangea Floret Cluster
Twenty-one separate four-sepal hydrangea florets cover the top and four sides of a tabbed dimensional paper support.
Materials
- 120-150 gsm colored paper for F and C pieces
- 200-220 gsm green cardstock for S1
- Scissors or craft knife and cutting mat
- Ruler and blunt scoring tool
- PVA glue
- Tweezers
Finished size: Approximately 60 x 60 x 23 mm; support 54 x 54 x 20 mm
Steps
CutValley foldMountain foldGlue area
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Fold and close the support
Print actual size and verify the 50 mm ruler. Cut S1 including all four tapered tabs. With printed face outward, mountain-fold the four 54 mm top edges 90 degrees downward: the top is 54 x 54 mm and walls are 20 mm tall. Mountain-fold each 5 mm side tab 90 degrees inward. Glue its marked 4 x 12 mm patch to the INSIDE of the neighboring wall, making a 5 mm lap. Keep the bottom open for finger pressure; hold each seam 60 seconds, then dry 15 minutes. The four bottom edges stand on the table.
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Form and mount the top cluster
Cut F01-F09 as individual four-sepal pieces. Valley-fold each of the four 4 mm hub edges so the sepal rises 25 degrees above the hub, colored face up; do not fold the central 4 x 4 mm square. Apply a thin film of glue to the BACK of that square only. Mount on the nine dotted squares of S1, spaced 18 mm apart with outer centers 9 mm from the top edges. F01-F03 are the near row left-to-right, F04-F06 middle, F07-F09 far row. Keep sepal axes parallel to the top edges; press hubs from below through the open bottom and dry 10 minutes.
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Add front wall florets
Form F10, F11, F12 with the same four 25-degree valley folds. Looking straight at the front outside wall, attach these in left-to-right order to its three 4 x 4 mm glue squares. Hub centers are 10 mm above the bottom, 18 mm apart; the end centers are 9 mm from the corners. Glue hub backs only, with two sepals pointing up/down and two left/right; sepals rise away from the wall. Brace inside with a finger, hold 60 seconds and dry 10 minutes before turning to the next wall.
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Add right wall florets
Form F13, F14, F15 with the same four 25-degree valley folds. Looking straight at the right outside wall, attach these in left-to-right order to its three 4 x 4 mm glue squares. Hub centers are 10 mm above the bottom, 18 mm apart; the end centers are 9 mm from the corners. Glue hub backs only, with two sepals pointing up/down and two left/right; sepals rise away from the wall. Brace inside with a finger, hold 60 seconds and dry 10 minutes before turning to the next wall.
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Add back wall florets
Form F16, F17, F18 with the same four 25-degree valley folds. Looking straight at the back outside wall, attach these in left-to-right order to its three 4 x 4 mm glue squares. Hub centers are 10 mm above the bottom, 18 mm apart; the end centers are 9 mm from the corners. Glue hub backs only, with two sepals pointing up/down and two left/right; sepals rise away from the wall. Brace inside with a finger, hold 60 seconds and dry 10 minutes before turning to the next wall.
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Add left wall florets
Form F19, F20, F21 with the same four 25-degree valley folds. Looking straight at the left outside wall, attach these in left-to-right order to its three 4 x 4 mm glue squares. Hub centers are 10 mm above the bottom, 18 mm apart; the end centers are 9 mm from the corners. Glue hub backs only, with two sepals pointing up/down and two left/right; sepals rise away from the wall. Brace inside with a finger, hold 60 seconds and dry 10 minutes before turning to the next wall.
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Finish all 21 small flowers
Cut the twenty-one 3 mm diameter dots C01-C21. Apply glue to the back of each marked 1.5 x 1.5 mm patch; center C01 on the exposed hub of F01, continuing matching numbers through C21/F21. Use tweezers and a blunt toothpick to place and press dots. Leave all sepals free. Dry 20 minutes on the open-bottom support. No stem, wire, foam ball or unlisted backing is needed.
Notes
The 3D model shows each piece in its finished, idealized shape; the exploded view only spreads the pieces apart. It is not a paper-physics simulation: curved shapes are forming guides, not exact physical folding or proof of developability, and intermediate fold shapes are not supplied.
- Original stylized compact hydrangea cluster: 21 four-sepal florets, 21 center dots and one integral tabbed support (43 cut pieces).
- The support is intentionally faceted, not a botanical sphere. All four seam tabs are included in both PDF and 3D. No concealed support materials.
- Sepals are rigid 25-degree folds, not stretched curved surfaces. The 3D uses zero-thickness paper; center dots are offset 0.12 mm to avoid coplanar surfaces. Glue thickness and bend radii are not simulated.
- Tiny glue text may extend beyond the 4 mm hubs; the dotted boundary, not text width, defines the glue patch. Keep glue off all sepal hinges.
- Digital checks do not prove physical foldability. Screen inspection and physical printing, cutting, seam access, paper stiffness and assembly remain pending.