Built by my former colleague, Stewart Allen (Co-Founder/CTO of WebMethods, CTO of AddThis, Co-Founder/CPO of IonQ, et al.).
What caught my attention:
- 100% free, no subscriptions, no accounts, no cloud
- Local-first: all slicing and toolpath generation runs on your machine
- Works in any browser, even offline once loaded
- Supports FDM/SLA, CNC milling, laser cutting, wire EDM
- Fully open source: github.com/GridSpace/grid-apps
Refreshing to see a tool that isn't trying to lock you into a subscription or harvest your data.
Also what's weird is that this project seems to be primarily written in javascript. I can't imagine that's a pleasant user experience for generating tool paths...
When the bugs don't creep up it's absolutely incredible, though.
For the A1 and P1S you're better off backporting the profile to PrusaSlicer or Orca.
And don't get me started on the network plug-in (the lack of transparency there makes me fairly suspicious that something is up) and the lack of directory structure support on the SD cards. Really, how could you mess it up.
But another part of me realizes that everyone is using Fusion360, despite the fact they have a history of taking away features to force people to migrate to paid tiers. So it probably doesn't matter.
This probably won't scroll to the correct place on the page but there's some images of my project at https://hcc.haus/propmania/#2024-palm-torches and https://static.cloudygo.com/static/Prop%20Making/2024%20Palm...
I used it instead of the terrible closed source Easel App for a CARVEY hobby CNC. For metal milling I find Fusion 360 is necessary.
At least for stuff that doesn't use device API's much, it seems like websites are the way to go. They're a whole lot easier to build than mobile apps.
The boring answer from Capt. Obvious. Incentive alignment.
That said, WebAssembly might be the trojan horse. While it started as a browser compile target, WebAssembly System Interface (WASI) is extending it beyond browsers into filesystem, networking, etc. etc. etc.
Fingers crossed, we may get cross-platform standards by accident.
That said, aren't Prusa/Orca/etc. all already open-source (and part of the same lineage)?
Many "official" slicers (Elegoo, Creality, Anycubic, and I imagine others) derive from Orca.
You can import models to orcaslicer (open source), do your slicing, and export the g code file to SD card.
If you want to skip the SD card, block the printer's mac/ip address at the firewall and set up WiFi. Then send the print directly from orcaslicer.
That being said, my gut says bambu is going to slowly require a persistent connection to the cloud at some point. Maybe they think they are an EV car company.
Trivial to firewall them from the internet.
They’re trying to introduce legislation that would require 3D printers to be online so that if you try to print a firearm, it won’t let you…
Granted, today, you can print offline.
Tomorrow? A firmware update might just brick it the next time it goes online or won’t be able to read the grbl
The whole notion is about as anti-American and authoritarian as laws get, I don't see it as anything more than political grandstanding, and even if Washington passes it with statewide, unanimous endorsement, it won't last a year before 9th circuit court strikes it down on purely 2A grounds.
Virginia Democrats are advancing multiple gun ban bills in the 2026 session, including assault weapon sales bans and magazine capacity limits, primarily through Democrat-controlled committees. Virginia's General Assembly has a slim Democratic majority sponsoring and pushing these measures without Republican support.
Bills like house SB 217 (assault weapon ban) and HB 271 (semi-auto ban) were approved in the Democrat-led Senate Courts of Justice Committee strictly along party lines. Sponsors such as Sen. Saddam Azlan Salim (D) lead these efforts, facing opposition from Republicans like Del. Terry Kilgore (R). They await full Assembly votes and signature from Democratic Gov. Abigail Spanberger.
In NY State, Democrats, holding supermajorities in the Assembly (103-47) and Senate (42-20), champion Governor Hochul's 2026 State of the State proposals. These include criminalizing unlicensed possession/sale of CAD files for 3D-printed guns (via Penal Law amendments), mandating 3D printer safety standards to block firearm production, and requiring recovery reports to state police. Key bills like S.227A (Sen. Hoylman-Sigal, active in 2025 session) target 3D-printed ghost guns/silencers as felonies; related A2228 pushes printer background checks.
Republicans offer no sponsorship or support, labeling Hochul's agenda and bills like S.227A "anti-gun, anti-speech" infringements on Second Amendment rights and innovation for non-gun printing. NRA-ILA criticizes them as futile against criminals while burdening hobbyists
In my opinion the ICE unrest is a smoke screen. There is a separate fully frontal assault on personal liberties impacting normal American citizens happening right now and it is happening while all the attention is on Minneapolis!
https://app.leg.wa.gov/billsummary/?BillNumber=2320&Year=202...
https://app.leg.wa.gov/billsummary/?BillNumber=2321&Year=202...
https://www.nraila.org/articles/20260127/virginia-gun-contro...
https://www.nysenate.gov/legislation/bills/2025/S227/amendme...
I don’t think this will pass as is but it shows you where lawmakers heads are. They would rather brick your capability than do actual policing.
The is really just a US specific issue where 90% what you need for a gun can be purchased easily, but the non functional handle requires registration, etc.
They could just make buying gun parts as strict as buying a whole gun
To be clear I have no desire to print firearms but I do not want my tools online and getting bricked when the company who made it goes out of business.
Right to use.
I don’t think a company should have a say in what you do with their product after you have purchased it. Whether you intend to print firearms or not. The acts of the few should not withhold liberty of the many.
