Open any STEP file

stepstr runs in your browser and converts the file on your own device, so nothing is uploaded.

The SeedHammer II from the sh-hardware repository, public domain: 1,076 parts from an 18.2 MB STEP file, drawn by stepstr’s viewer.

The SeedHammer II engraving machine, seen from above and the front left.

Orbit it, zoom right in

Orbit all the way around, zoom out to the whole model, or in until one part fills the screen. Every edge is the STEP file’s own.

The needle's tip close up, over the steel plate.

Measured on the exact shape

Pick two faces, edges or points, and stepstr measures between them on the file’s exact geometry, not on the triangles on screen.

The steel plate from the front, measured across its top face.

Switch parts off, or keep one

This list is the file’s own assembly tree. Switch parts off to see what they hide, or keep one alone.

housing
y_axis
y_carriage
x_axis
x_carriage
electronics

The hammer’s carriage shown alone, the rest of the machine switched off.

A simple exploded view

One slider moves each part away from the middle of its assembly, level by level, and back again. It is plain and automatic, enough to see what sits inside.

The machine exploded: its parts spread apart along the assembly's levels.

Three cuts at once

Up to three planes, on any axis. Each takes one side away and hatches what it cuts, in the part’s own colour.

The machine cut by three planes, the cut faces hatched.

The view lives after the #

This address holds the whole view: the file’s sha256, hidden parts, cuts and camera. Browsers never send what follows the # to a server.

stepstr.space/#/u?src=…&x=a6654805…d2af4e72a

The machine cut by three planes, its sled hidden: the view the address describes.

Drop a file or paste a link

A file from your disk is read where it lies, and any https link to a STEP file opens if its server allows it.

II-v74.step, dropped#/b/a6654805….step?name=II-v74.step
raw.githubusercontent.com/…/II-v74.step#/u?src=https%3A%2F%2Fraw.githubusercontent.com…

GitHub pages, zip and gzip

A GitHub page link turns into its raw file, Git LFS included, and zipped or gzipped files are unpacked first.

github.com/Gangleri42/sh-hardware/blob/main/…#/u?src=https%3A%2F%2Fraw.githubusercontent.com…
model.zip, model.step.gzunpacked on this device

Blossom and Nostr addresses

A Blossom address is the file’s sha256, so any server holding it will do. A Nostr event that points at a STEP file opens too.

blossom:sha256:a6654805…d2af4e72a#/b/a6654805…d2af4e72a
nevent1… or naddr1…#/n/<pointer>

Inside a Nostr app

The same viewer ships as a napplet, a sandboxed page any Nostr app can host. The app hands it each file; it has no network of its own.

stepstr running as a napplet inside a notes app built to demonstrate it, with the messages between the two below. — stepstr as a napplet in a demonstration notes app. The strip below lists what the two ask each other.

The SeedHammer II in a small frame of its own.

Needs: inc, resource
Uses when offered: theme, link, outbox, fs, storage
Page: one file, 1.1 MB
Converter: fetched through the app by its sha256

Try it

Drag the model. The address under it follows your view and opens it in stepstr exactly as you leave it.

The address under the model opens this view in stepstr, where you can turn it yourself.

stepstr.space/#/u?src=…&x=a6654805…d2af4e72a

Open this view in stepstr Drag sideways to turn it.

The SeedHammer II from above and the front left.