Updates & Announcements
Latest features, improvements, and news from Karasawa Labs.
March 26, 2026
Updates coming to mesh repair pipeline!
Hi folks, We still have a few errors with the mesh repair pipeline on a few of the services. We're testing various tools - let us know if your part didn't slice or repair and we'll get it fixed for you.
March 26, 2026
Deep repair authentication error
Hi folks! there was a Google Cloud authentication error for deep repair - it's getting resolved right now stay tuned!
March 24, 2026
Custom Automotive Quotes & Deposit System
Staff can now create custom quotes for large-format 3D printed automotive parts. Customers receive a branded HTML email with itemized breakdown, pay a 30% deposit via Stripe, and track quote status through their portal. Deposits are non-refundable after printing starts. Customers can accept or decline quotes. Full activity logging on every quote action.
March 24, 2026
Cloud Slicing & AI-Powered Settings
All mesh processing now runs on Cloud Functions 2nd gen (32GB RAM, 8 vCPU). Smart router automatically chooses local WASM or cloud based on mesh complexity. AI settings heuristic picks optimal layer height, walls, infill, and support. Multi-plane parallel slicing splits and slices all parts simultaneously. Auto-orientation finds the best print angle for each part.
March 24, 2026
KarasliceEngine — Proprietary C++ Slicer
Built from scratch: 172 tests, 9 infill patterns, Arachne variable-width perimeters, tree support, bridge detection. Compiles to 482KB WASM for instant browser slicing and native iOS static lib. 9 printer profiles with OrcaSlicer-quality defaults. 3D toolpath preview with color-coded walls, infill, support, and layer slider. Dead-simple UI: pick your printer, pick quality, hit slice.
March 24, 2026
Separate Components & Split Pipeline v12
New tool extracts disconnected shells from multi-part meshes with spatial clustering — a 430-shell car body stays grouped instead of becoming 430 parts. Split pipeline v12 fixes double-wall capping on meshes up to 2.2M triangles. 25-file regression corpus with automated testing.
March 24, 2026
Security Hardening & Code Quality
Auth guards added to all unprotected server actions. Firestore rules locked down (subscription bypass fixed). Cloud Functions refactored from 578 to 210 lines. 36 new tests for slicer routing and settings. Admin Cloud & ML monitoring dashboard.
March 23, 2026
Security Audit & Architecture Cleanup
Comprehensive 4-agent parallel audit across web, iOS, cloud services, and AI flows. Firestore rules hardened (admin/whitelist email exposure fixed). Duplicate docs removed, Python dependencies pinned, Swift package versions standardized. 82 docs reviewed — 4 duplicates removed, 3 formatting issues fixed. Documentation index updated to reflect current architecture.
March 22, 2026
Welcome Emails, Sender Fix & Complete Account Deletion
Welcome emails now send for both email/password and OAuth (Google/Apple) first sign-ins via Resend. Sender address changed from noreply@ to build@karasawalabs.com for better deliverability and trust. Account deletion now purges all user data: Stripe subscriptions, Storage files, Firestore records (users, profiles, messages, conversations, repair jobs, blocks, trial eligibility). Password reset and password-changed confirmation emails verified end-to-end.
March 22, 2026
Debris Strip, Single-Mesh Export, Mobile Upload & More
Split debris strip now runs at the correct pipeline stage (between toCreasedNormals and mergeVertices) where fragments are genuinely disconnected. Export works for any loaded mesh — repair, AI, or import — not just after splitting. Mobile file upload fixed: drop zone now properly accepts taps on touch devices. Meshy AI 'stuck generating' on refresh fixed. Point cloud reconstruction improved with more frequent UI yields to prevent freezing on large meshes. Cloud worker status contract unified (processing/completed instead of running/finished). Batch upload now validates 3D file types.
March 22, 2026
Viewport Part Selection Fix
Fixed a glitch where clicking a split part created a ghost duplicate on the back side instead of highlighting it. The selection overlay was displaced 2.5x closer to center than the actual part during explode view (scale factor mismatch: 60 vs 150). Also fixed z-fighting between the selection overlay and the batch mesh by adding polygon offset bias.
March 22, 2026
Security Hardening — Auth & Access Controls
Comprehensive security audit and fixes: all repair job actions now require authentication with ownership verification. Bug report listing restricted to admins. Order fulfillment validates session ownership. Admin file operations restricted to approved storage paths. Message read-marking validates participant membership. DM attachment uploads now check MIME types. Block/unblock race condition fixed.
March 22, 2026
Split Pipeline v12 — Post-Process Debris Strip
Debris shells (2-triangle degenerate fragments from ear-clip pass) are now stripped from all split output — both Manifold and Ear Clip paths. Previous debris fixes only ran inside the Ear Clip path and were bypassed when Auto mode used Manifold (the common case for watertight meshes). New position-based connectivity analysis correctly identifies disconnected micro-fragments even when they share boundary edges with the main component. Removes ~2,225 debris shells (~4,450 triangles) from the body.stl benchmark.
March 22, 2026
User-to-User Messaging, Google Analytics & Split Pipeline v11
New direct messaging system — search and message other users on the platform with file sharing support. Block/unblock users. Support conversations now load correctly in user accounts. Split pipeline v11 audit completed: boundary edges down 91% from v7, duplicate shells fully eliminated, 83 parts from 21 cut planes. Investigating remaining debris cleanup, boundary closure for watertight output, and non-manifold edge prevention. Google Analytics integration added. Meshy AI viewport loading fix deployed — models now proxy through Firebase Storage to avoid CORS failures.
March 21, 2026
Bigger Files, More Formats & Security Fixes
Per-file upload limit increased from 80 MB to 150 MB across all services (Cloud Repair, AI Tools, Quote Upload, Messages). Per-user storage quota raised from 300 MB to 1 GB. Upload validation now accepts GLB, GLTF, FBX, and AMF formats alongside STL, OBJ, 3MF, PLY, and OFF. Fixed expired Firebase API key that blocked messaging. Fixed 6 security vulnerabilities including unauthenticated bug report access and missing auth checks. Trial notification moved from overlay banner to inline toolbar badge.
March 20, 2026
Split & Printability Accuracy Fix
Fixed a critical bug where repair reported 'watertight: yes' but split immediately failed with 174K+ ghost open edges. Root cause: creased normals split vertices at sharp edges, and the edge diagnosis used index-based keys that counted split-normal vertices as open boundaries. Diagnosis now uses position-only merging, so watertight meshes are correctly recognized across repair, split, and printability scoring. Also fixed App Hosting backend ID mismatch that prevented env vars from reaching the client build.
March 20, 2026
Bridge Caps, Model Primitives & Account Files
Double-walled shell splitting now bridges inner/outer boundary loops instead of flat-filling — eliminates duplicate shells and produces closed hollow solids for correct slicer toolpaths. Model primitives (Box, Cylinder, Sphere, Cone) now render in the viewport with transforms. Load your saved files directly from your account in the Import panel. AI generation tasks now auto-clear on refresh if stale. Mobile file uploads fixed for iOS and Android. Assembly guide with 6-view spatial layout included in ZIP exports.
March 20, 2026
Billing, Messages & Bug Fixes
AI access now suspends after 2+ failed payment attempts. Firebase messaging token refresh fixed — no more silent disconnects on long sessions. Admin subscription portal shows all statuses (trialing, active, past_due). Parts label toggle no longer removes split geometry. Meshy Text-to-3D results load directly into viewport and save to your account.
March 19, 2026
Split Pipeline Bug Fixes
Fixed duplicate shell generation in split parts — cap faces now stay connected to the mesh boundary in exported files. Fixed triangle count accuracy in micro-part filtering. Removed aggressive shell extraction that was discarding geometry from thin-panel parts. Repair pipeline verified: triangle soup inputs produce zero non-manifold edges at 100K+ scale.
March 19, 2026
Security Hardening & 539-Test Suite
539 automated tests across 8 suites — all passing at 100%. Covers API routes, server actions, security (XSS, path traversal, auth bypass), slicer pipeline (clipByPlane, cap generation, boundary loops), repair stress (1-2M triangle scale, triangle soup to manifold), mobile browser (AudioContext, touch, responsive layout), and geometry engines. Authentication added to all API endpoints and cloud worker. Slicer stress-tested with 500K-1M triangle meshes, 50 cut planes, and degenerate geometry inputs.
March 19, 2026
Split Engine Upgrade & AI Diagnostics
5 split methods: Auto, Manifold, Ear Clip, Centroid Fan, Surface. Manifold-3d updated to 3.4.0 with defensive guards. Fast-path for repaired meshes skips redundant repair. Auto-diagnose button on split errors. 6-view spatial layout in assembly guide. Per-part repair after split.
March 19, 2026
Repair Pipeline & Workbench Improvements
Smarter hole classification preserves intentional openings. Internal face removal for high-genus meshes. Spatial debris detection keeps structural panels intact. Faster cloud repairs with in-memory caching. Real-time repair progress. New History panel with undo-to-any-state. New searchable Tool Guide.
March 18, 2026
Improved File Handling
Unified 80 MB upload limit across all services with per-service compatibility indicators in the Import panel. Per-user storage capped at 300 MB.
March 18, 2026
AI Tools Improvements
AI Remesh and AI Retexture now always process your current viewport state — repairs and edits are included. Results auto-load into the viewport and save to your account.
March 18, 2026
Message Center
Message our team directly from the portal or Karaslice. Real-time delivery with notification badges.
March 18, 2026
Admin Dashboard
New admin dashboard with user management, subscription tracking, and audit logging.
March 18, 2026
Updates just went out
-Added stability for repairing severely corrupted files -New routes for direct karaslice to price quote engine -New log output to catch errors in karaslice If you come across anything errors during usage please message me at: Build@karasawalabs.com
March 18, 2026
Updates coming to app
Users! Thank you for sigining up! There's some bugs we're working out with the app today as it's a new release; stay tuned!
March 17, 2026
Modeling Toolkit
Create primitives, use transform gizmos, and perform union/subtract boolean operations on meshes.
March 17, 2026
AI Remesh & Retexture
Cloud-based AI remeshing for clean topology and PBR retexturing from text prompts.
March 16, 2026
Triangle Edit Mode
Full triangle editing suite with 6 selection modes, subdivide, decimate, smooth, extrude, bridge, and vertex welding.