Technical Blueprint

Architecture · Blueprint · Cyanotype

Download examples

Technical Blueprint, White line on prussian blue, annotated by someone who knew the machine — Machine assembly drawing·Nano Banana Pro

Recipe

The style is the recipe. The subject is yours.

The examples above were generated with Nano Banana Pro and Seedream 4.5. The recipes below are written for GPT Image and Ideogram, so treat the settings as a starting point rather than the exact run.

A description in plain sentences. This is the version to start with, and it works on any current image model. Settings below are the ones we used on GPT Image; treat them as a starting point.

Make it yours

The recipe is the style, not the picture. Put your own subject in and the highlighted part of the prompt changes.

Prompt

An early twentieth century engineering blueprint of a mechanical assembly. Fine white lines on a deep prussian blue field, dimension lines with arrowheads, a section view, hatched cut surfaces, a title block in the lower right with handwritten draftsman lettering. Uneven exposure across the sheet, lighter at the edges, faint fold creases, small handling marks. Photographed flat.

The prompt gets you close. Feed one of the examples in as a style reference for the rest. Download the images

Use the examples as a reference

Download the examples

Send the example as an input image to the images.edits endpoint alongside the prompt, or attach it in ChatGPT. It follows composition closely, so describe your subject firmly or it will copy the example.

Settings on GPT Image

Size: 1536 x 1024
Quality: High
Background: Opaque
Output: PNG

Tips

1Uneven exposure and fold creases are what separate a blueprint from a blue rectangle.
2A title block in the corner anchors the whole drawing.
3Draftsman hand lettering reads better than a typeface for the annotations.