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Casting Toolbox
Casting process calculations, without the spreadsheet
Free, open-source calculators for casting process engineers: riser design, gating, yield, shrinkage, machining allowance and STL hotspot analysis. Runs fully offline in your browser. No account, no upload, no data leaves your machine.
Hey Product Hunt 👋
I'm a casting engineer, not a software developer.
My working day is casting process design — how long to pour, how big the choke is, how large the riser needs to be, what yield to expect. None of it is hard. All of it is repetitive. For years that lived in spreadsheets I kept rebuilding, and in reference books I kept digging through.
At some point I started using AI to write code. I can't write software, but I can describe exactly what a foundry engineer needs, and I can tell when an answer is wrong. That turned out to be enough.
Casting Toolbox is what came out of it: 15 calculators for the calculations I actually do, a 172-card reference library with sources attached, and an STL design centre that reads a casting and finds the hotspots.
A few things I deliberately did NOT do:
— It does not simulate anything. It is not a MAGMA or ProCAST replacement, and I'd rather it not be sold as one. It sits between Excel and the simulation package.
— It does not guess. When the mesh analysis can't give a reliable answer, it blocks the recommendation and says why, instead of printing a number you'd trust too much.
— It does not phone home. No account, no upload, no telemetry. Unplug the network and it still works.
Two honest caveats:
1. The core UI is bilingual (Chinese / English). The deeper reference content is still Chinese-first — I'm working through it.
2. The Android build is signed and statically checked, but I have not been able to test it on a real device yet. Please tell me if it misbehaves.
If you work in a foundry, I'd genuinely like you to try it and tell me where the numbers are wrong. That's the feedback that's actually useful to me — a wrong formula is worth more to me than a compliment.
Links: GitHub is in the maker comment above, and you can try the web version without downloading anything.
About Casting Toolbox on Product Hunt
“Casting process calculations, without the spreadsheet”
Casting Toolbox was submitted on Product Hunt and earned 0 upvotes and 2 comments, placing #97 on the daily leaderboard. Free, open-source calculators for casting process engineers: riser design, gating, yield, shrinkage, machining allowance and STL hotspot analysis. Runs fully offline in your browser. No account, no upload, no data leaves your machine.
On the analytics side, Casting Toolbox competes within Design Tools, Productivity, GitHub and Tech — topics that collectively have 1.6M followers on Product Hunt. The dashboard above tracks how Casting Toolbox performed against the three products that launched closest to it on the same day.
Who hunted Casting Toolbox?
Casting Toolbox was hunted by Developer of Casting Toolbox. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Casting Toolbox including community comment highlights and product details, visit the product overview.
Developer of Casting Toolbox