Mad Lab pumpkin stencil, printable black and white frankenstein template
Mad Lab design carved into a pumpkin and glowing with candlelight

Printable stencil · carved and lit

Free · Hard · PDF

Mad Lab Pumpkin Stencil

A free printable pumpkin stencil of a laboratory with lightning bolts and bubbling flasks. Rated hard: many small openings and thin skin strands for experienced carvers. Download it as a PDF sized for your pumpkin; cut out the black areas and keep the white.

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Difficulty
Hard
Carving time
1.5–3 hours
Best pumpkin
Large 10" recommended
Floating pieces bridged
22
Theme
Frankenstein
License
Free for personal use

How to carve this mad lab stencil

  1. Download the PDF in the size that matches your pumpkin and check the 5 cm scale bar.
  2. Cut a lid or a back opening, scoop out the pulp and thin the front wall to about 1 inch.
  3. Tape the stencil flat and poke along every line about 3 mm apart.
  4. Cut the smallest openings first with a detail saw, then the larger shapes; keep every thin skin strand.
  5. Put an LED light inside and clean up any edges that block the glow.

This design had 22 white areas that would have fallen out when carved. We connected them with 22 skin bridges, and the download re-checks the bridges for the pumpkin size you pick. Some skin strands are thin at small sizes, so print Medium or Large if you can.

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