Engineering

2D drafting,and a DXF back

LibreCAD, on an Ubuntu desktop of your own.Technical drawings in the format everybody else can already open.

LibreCAD 2.2.0.22 cores · 4 GBOpens in a browser tab

hub://librecad

$ dxflow workflow create --identity librecad hub://librecad --start --link

01Pick a machinecores, memory and a rate per hour

02Create the workflowpulled from the hub, once

03Run it, then stopstopped when the work is done

The application

Lines, layersand dimensions

A drafting board for the drawing that does not need a solid model.

Snaps and constraints

Endpoint, midpoint and intersection snaps, on a grid you set in real units.

Layers and blocks

Reusable blocks and layer-based line types, the way a DXF expects them.

DXF in and out

Open what a colleague sent, and write it back, on the volume.

How you run it

Every defaultis one override away

The session reads its settings from the environment, so you set them on the start line.

VNC_PASSWORDWhat the tab asks for. It ships as dxflow, and everyone reading this knows that.

PANEL and TASKBARBoth hidden, so the drawing area has the whole screen. Show either one to get the desktop back.

AUDIOOff here. Turn it on and the desktop sound is streamed beside the picture.

start it your way

$ dxflow workflow start librecad --override env.app.VNC_PASSWORD=something-long

$ dxflow workflow start librecad --override env.app.TASKBAR=show --link

The session

The drawing areafills the screen

Streamed to your browser, with LibreCAD already maximized.

6082Browserin the tab, at /vnc.html

5901VNCin a native client

/volumeStorageyour files, kept between runs

Open it from anywhereStart with --link and the session comes back on an HTTPS address.

Set a password firstVNC_PASSWORD defaults to dxflow, and everyone can read this page.

Good to know

Two dimensions,and DXF in the middle

LibreCAD is a drafting tool, not a modeller. DXF is how the drawing travels to everything else.

Drafting, not modelling

Plans, sections and details. When the job needs a solid, FreeCAD is the entry beside this one.

DXF both ways

Open what a colleague sent and hand it back in the same format. The file is the interface between the tools.

Built on Ubuntu

Void has no LibreCAD package, so this entry sits on the Ubuntu desktop instead of the usual base.

The image

Pulled once,then it stays

LibreCAD arrives as one image. This is what comes down the first time, and what the disk should have free for it.

526Mamd64compressed, the way the registry counts it

515Marm64compressed, the way the registry counts it

20GOn diskunpacked, with room to work beside it

ghcr.io/dxflow-ai/librecad:latestPublished from the hub, pulled on the first start and kept for the ones after it.

Either architectureamd64 and arm64 are both published, and the machine pulls the one it runs.

What it asks for

What it wants,and what it needs

The definition asks for 2 cores and 4 GB. The image comes up on less than that, and a start given --fit trims the ask to whatever the machine actually has.

2 cores · 4 GBAsks forwhat the definition writes down

2 cores · 2 GBRuns onthe least the image comes up on

Not neededGPUit works on the cores alone

The ask is not the floorThe definition writes down what suits the work. The image itself starts on less, which is what the second figure is.

--fit caps it to the hostA start given --fit trims each step to what the machine actually has, for that start alone. The definition is never rewritten.

Machines that fit it

LibreCAD asks for 2 cores and 4 GB. Cheapest first.

E2 Medium

$0.042/ hour2 cores · 4 GBStart this machine

T3 Medium

$0.052/ hour2 cores · 4 GBStart this machine

B2s

$0.052/ hour2 cores · 4 GBStart this machine

Run LibreCAD on your own machinePick a machine that meets it, and it opens about a minute after you ask.

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