Pepper Comfort Colors tee shown back and front: a Section A-A gearbox cutaway on the back and a small section-line symbol on the chest.

Section A-A Gearbox T-Shirt, Gear Cutaway Engineering Drawing Tee, Mechanical Engineer Gift

Comfort Colors 1717 / Pepper / S
$29.99
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Pepper Comfort Colors tee shown back and front: a Section A-A gearbox cutaway on the back and a small section-line symbol on the chest.
  • Pepper Comfort Colors tee shown back and front: a Section A-A gearbox cutaway on the back and a small section-line symbol on the chest.
  • Back of a Pepper Comfort Colors 1717 tee with Section A-A in off-white type above a cyan gear cutaway inside a hatched housing and five numbered notes.
  • Front of a Pepper Comfort Colors 1717 tee with a small left-chest cutting-plane symbol with A arrows above the words Tolerance Stack.
  • Close-up of the print: cyan meshing gears with keyed bores inside an off-white hatched housing, numbered balloon callouts and a wavy oil line, lightly distressed.
  • Pepper Comfort Colors tee shown back and front: a Section A-A gearbox cutaway on the back and a small section-line symbol on the chest.
  • Back of a Pepper Comfort Colors 1717 tee with Section A-A in off-white type above a cyan gear cutaway inside a hatched housing and five numbered notes.
  • Front of a Pepper Comfort Colors 1717 tee with a small left-chest cutting-plane symbol with A arrows above the words Tolerance Stack.
  • Close-up of the print: cyan meshing gears with keyed bores inside an off-white hatched housing, numbered balloon callouts and a wavy oil line, lightly distressed.
Section A-A Gearbox T-Shirt, Gear Cutaway Engineering Drawing Tee, Mechanical Engineer Gift

Section A-A Gearbox T-Shirt, Gear Cutaway Engineering Drawing Tee, Mechanical Engineer Gift

$29.99
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A reduction gearbox cut open like a textbook section view, with numbered callouts that tell the real story: the pinion does all the work, the output gear takes the credit, and nobody knows where the leftover bolt came from. Tolerance Stack makes shirts for mechanical engineers, maintenance techs and machinists who have opened a few of these.

What you get

  • Front: Small left-chest section-line symbol with A arrows over the TOLERANCE STACK wordmark and "Section A-A · Scale 2:1" (about 4 in)
  • Back: SECTION A-A in big mono type over a cutaway gearbox: hatched housing walls, a meshing pinion and output gear with keyed bores, an "oil level (allegedly)" line, a drain plug and a leftover bolt, with five numbered balloons and matching funny callout notes
  • Printed with premium DTF transfers and heat-pressed by hand in Charleston, SC

Choose your shirt

  • Comfort Colors 1717: heavyweight 6.1 oz garment-dyed cotton, relaxed fit (S–3XL)
  • Bella+Canvas 3001: lightweight 4.2 oz Airlume cotton, softer retail fit (S–3XL)

Best on dark shirts: Comfort Colors in Pepper or Black, Bella+Canvas in Black or Navy.

Colors may vary slightly by screen.

Care

Wash inside out in cold water, tumble dry low or hang dry, don't iron the print.

Production & disclosure

Designed by Elevated Designs LLC using digital design tools, with AI assistance. Printed and pressed to order in Charleston, SC.

Tolerance Stack · engineers, machinists and CAD designers — designed by Elevated Designs and printed to order in Charleston, SC.

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