Spring Pass Co
Spring Pass Co is a small independent studio making digital tools and toys.
In machining, a spring pass is a final cut repeated at the same setting. It takes off only the bit of material the tool sprang away from on the previous cut, so the part comes out true to size. We like that idea: small, careful work that ends up right. Everything we make runs in a web browser.
What we make
Browser toys
Free
Interactive drawing and physics toys you can play with in a browser: a double pendulum, a harmonograph, a spirograph and a string-art maker. They're published on itch.io at workbenchtoys.itch.io.
Pattern pack
Digital download · $5 · not yet available
A planned downloadable set of patterns made with our toys. It isn't on sale yet.
Permit Clock
Free
A free directory of building-permit wait times in several US cities, built from public records. Visit permitclock.pages.dev.
Buying from us
Paid items are digital downloads. Purchases made on this site are processed by Stripe. Items bought on itch.io are sold through itch.io and follow its policies. See our refund policy for what happens if something goes wrong.
Contact
Questions or support: springpassco@gmail.com.