About Selfsame Labs
One person, building tools for drawing production
Selfsame Labs is one mechanical engineer writing software for the parts of drawing production that are slow for no good reason: copying, retyping and checking that two copies still agree.
Most of that work moves information that already exists in another file. The tools carry it across the same way every time, and tell you when the two copies stop agreeing.
No calculations and no design decisions. The engineering stays in your files, and the person who wrote the code answers the email.
Who
DJ Marshall is a mechanical engineer who works in Revit and AutoCAD on real building projects and builds these tools around problems seen on those projects.
Why build tools
Production time on a drawing set goes to work that is not design: copying schedules from a spreadsheet to a sheet, renumbering notes, checking that the table on the drawing still matches the file. That work is where errors get in. Each Selfsame Labs product takes one of those jobs and does it the same way every time.
How a product gets made
A tool starts from a task that is done by hand on every project, where the information already exists in another file and only has to be carried across. Three tests decide whether it gets built:
- It removes copying, not judgment. No engineering calculations and no design decisions. The engineering stays in your files.
- It can be checked. Every rule it follows can be written down on the product page and covered by an automated test on synthetic files.
- It fails safely. When it is unsure, it refuses and says why, rather than guessing with your drawings or your spreadsheets.
Before a version ships, it is installed and tested in every supported Revit and AutoCAD version on the author's own computer and licenses, with synthetic project files. Every release is recorded in the changelog, fixes included.
How the business runs
Sold here only
Products are sold only on this site. There is no reseller and no sales team.
Support from the author
The person who answers support email is the person who wrote the code.
Limits in writing
Product pages describe what each tool does and does not do. If a feature is not listed, assume it is not there and ask.
Synthetic test data
Test data in the product source is synthetic. No client project files are used to build or demonstrate the software.
Nothing collected
The add-ins collect nothing: no analytics, no telemetry, no network connections. See Privacy.
If the one person is unavailable
A fair question for a one-person business. Your license is a signed file on your computer, checked offline, with no server behind it to switch off. The version you bought keeps working in the Revit and AutoCAD versions it supports, whatever happens to the business. Your Excel and Word files stay ordinary files, and what was drawn on your sheets stays native lines and text if the add-in is ever removed.
Contact
Email support@selfsamelabs.com.
First product
Schedule Link is coming soon. Read what it does first.
Commands, versions, limits and price, all on one page.