Updates & Announcements
Latest features, improvements, and news from Karasawa Labs.
July 29, 2026
Region Edit reference photos, a Karaslice MCP server, AI assistant memory, and full-build quotes
Region Edit now takes a reference photo alongside your text prompt — attach an image in the mesh viewer and the AI edit follows its look, on both renderers. New: connect Karaslice to Claude or any MCP-capable client with an API key you create in the portal, and ask it to analyze, repair, slice, or split meshes in your own account, scoped just to you (AI-guided splitting is a Pro feature). The site's AI assistant now remembers useful context from your past conversations for better answers, with a memories panel where you can review and delete anything it's kept. Mesh Repair is more reliable on complex, large meshes — a failure that could affect certain files is fixed. Full automotive-body build quotes now run end-to-end: configure your build and get a live price preview right in the quote flow, submit it, and our team finalizes the formal quote for your review. Panel breakdowns for these builds are cleaner and more reliable too — better watertight cut caps mean print-ready parts even on complex, fully-fused car bodies. Continued polish across both renderers and more AI-assisted workflow improvements are in progress.
May 14, 2026
Ship-Everything wave: every Edit "coming soon" stub wired, slicer bridge complete, Path 3 live
Two weeks of audit-closure and renderer parity. Every "coming soon" stub in the Edit panel — Bridge Edge Loops, Separate Selection, Fill Hole — is now wired on both classic and r3f. Classic Printer panel mounts the same Cloud Printer management surface r3f had, and classic Model panel gained the boolean primitives UI. On the slicer side, the engine bridge stopped silently dropping Arachne perimeters, adaptive layer height, the quality preset, start/end g-code template interpolation, and material temperature lookup — those fields now actually reach KarasliceEngine instead of being lost between the UI and the C++ engine. Region Edit Path 3 (Llama-Mesh autoregressive backend) ships with idempotent cost recording and per-user attribution. Under the hood: Tailwind 3 → 4 (CSS-first config), Recharts 2 → 3, Next 15 → 16, TypeScript 5 → 6, 8 Dependabot vulnerabilities closed, the entire Anthropic-related cost loop hardened with a $1/day Brain spend cap that actually triggers now (it was silently broken before — the accumulator was reading the wrong Firestore collection). Test count crossed 2,900 across vitest, pytest, brain comprehensive, and iOS XCTest. Customer-visible polish: post-payment redirect dead-ends fixed, /kslice typo redirects to /kslicer, paywall gate handles Stripe outages gracefully instead of hanging, and PII at rest in subscription audit logs is now HMAC-hashed.
May 4, 2026
Cloud repair reliability fix + roadmap progress
A backend dispatch issue earlier today caused a small number of deep-repair jobs to fail with a queue error before processing. The fix is live and affected users were notified directly — re-running the same mesh now goes through cleanly. We also added a server-side guard plus a regression test in CI so this exact mismatch will not recur. Behind the scenes this week: account email change with abuse checks, two-account merging via Google OAuth proof-of-ownership, and a 7-day Standard free trial that auto-starts at signup. On the roadmap and getting close: AI Region Edit (paint a region of your mesh, describe the change, review variants), multi-plate slicing with sequential collision checks, and per-object print modifiers for fine-tuned walls, infill, and supports inside one print.
April 29, 2026
April roundup: AI Region Edit, Thicken with lattice infill, smoother Slice and Split
Two big new tools landed this month. AI Region Edit lets you lasso or box-select a region, describe the change you want in plain English, and review side-by-side variants before committing — including a 3D comparison slider with synchronized cameras. Thicken adds wall thickness or solid fill to your mesh in three modes (Hollow, Solid, Partial), with Pro members getting lattice infill (gyroid, honeycomb, cubic) and a live preview overlay in both renderers. Slice and Split are now properly separated in the activity bar with a single shared state, so cut planes carry through both panels seamlessly. We also rebuilt the Karaslice Edit panel to wire up nine previously inert buttons. Available now on web; Thicken iOS support shipped alongside.
April 29, 2026
Faster cloud repair, more reliable subscriptions across web and iOS
Cloud repair and slicing pipelines are faster and more reliable this month — better storage-path validation, cleaner hollow fallbacks, and stricter input checks across the board. Subscriptions now sync through a single source of truth across web and iOS, so a Standard or Pro membership purchased on one platform is instantly recognized on the other. Sign-in is more reliable too: accounts are unified by email, so signing in with Google, Apple, or email/password always lands you on the same account instead of creating a duplicate. Card-decline handling is more responsive, and admins can no longer get locked out of their own dashboards by a payment hiccup.
April 20, 2026
Updates to site
Howdy folks! We're aware of a couple issues with the UI - we're rewiring some of the features to use R3F instead of Three.js. Stay tuned. Let us know if you encounter any issues. Updates are ongoing right now and for the next couple hours.
April 18, 2026
Improved Quoting, New Slice Panel, AI Tools Reorganization & Feature Comparison Update
Quoting engine improved — pricing now accounts for material type, printer capabilities, and support structures for more accurate quotes across all filaments (PLA, PETG, ABS, TPU, ASA, Nylon, carbon fiber composites). Two quote options: Parts Only (we print and ship the pieces) and Assembled (we print, assemble, and ship the finished build). Faster quoting for large multi-part models — no more timeouts on 50+ piece exports. Karaslice UI reorganized: AI Tools panel now grouped into three clear sections (Mesh Processing, Texturing, 3D Generation) for easier navigation. Slice (GCode generation) is now its own sidebar panel — previously hidden inside Export. Split and Slice are clearly separated in the activity bar. Feature comparison table fully audited against current versions of OrcaSlicer, Cura, PrusaSlicer, Simplify3D, Netfabb, and LuBan to ensure accuracy.
April 4, 2026
Security Hardening, Instant AI Billing, SEO Overhaul & Defect Overlay Fix
Major security audit complete — rate limiting now enforced on all unprotected API routes and server actions (15+ endpoints). AI tool billing is now instant: remesh, retexture, text-to-3D, and image-to-3D charges hit your card immediately when the task succeeds instead of waiting for end-of-cycle collection. Payment method verification required before using any AI tool. Defect overlay visualization fixed — vertex deduplication now correctly identifies real open edges instead of painting the entire mesh red (was showing 2.7M phantom edges on a 922K triangle mesh). AI upload timeout now scales with file size (60s base + 30s per 10MB, up to 5 minutes) — no more silent timeouts on 40MB+ files. SEO overhaul: per-page canonical URLs (was treating all pages as homepage duplicates), SiteNavigationElement and SearchAction structured data for Google sitelinks, robots.txt conflict resolved. Account deletion now preserves trial records to prevent re-trial abuse. Admin user deletion now properly cancels Stripe subscriptions. Admin/whitelisted users can no longer be locked out by payment failure checks. iOS Swift bridge OpaquePointer type errors resolved.
April 2, 2026
Bambu Studio QDT Support, AI Brain Live, Quote & Payment Upgrades
Karaslice now supports Bambu Studio QDT files — import projects with slicer settings auto-applied, export with plate layout for your Bambu printer. The AI Brain is now making real-time decisions to optimize your mesh settings. Quote system upgraded: pay deposits and remaining balances directly from your portal, with instant email confirmations. Subscription security tightened — failed payments are handled immediately with clear next steps to restore access.
April 2, 2026
Updates coming to Autorepair
Hi users, we're aware of a couple issues with auto repair - we're currently working on a fix will post updates soon
March 30, 2026
Neural Part Segmentation, Behavioral Telemetry, 25-dim ML, Account Sync & 990 Tests
Smart Split now uses PointNet neural segmentation — a trained ONNX model that understands semantic part boundaries (arms, legs, doors, panels) instead of just geometric convex hulls. V-HACD and neural segmentation run in parallel; the system automatically picks the result with higher confidence. A green 'Neural: High confidence' or amber 'Geometric: Standard confidence' badge shows which method won. Full behavioral telemetry pipeline is live: every tool click, parameter change, panel switch, and session journey is tracked anonymously. The ML feature vector expands from 11 to 25 dimensions — 14 new behavioral features (session duration, panel dwell ratios, tool usage patterns, undo rate, AI acceptance rate) feed into the Central Brain and XGBoost training pipeline. A weekly Cloud Function distills session data into per-mesh behavioral profiles. All user accounts are now fully synchronized across Firebase Auth, Firestore, and Stripe. OAuth provider (Google/Apple) is correctly tracked. 38 TypeScript errors resolved across the codebase — ignoreBuildErrors is now disabled. Terms of Service updated with 2-day grace period refund policy. Pricing corrected: Standard $19.99/mo ($13.99/mo annual), Pro $34.99/mo ($29.99/mo annual). 990 Vitest tests passing, 0 TypeScript errors.
March 29, 2026
Slicer Feature Parity + Cloud Printer Export — OrcaSlicer, Cura, PrusaSlicer Features Now in Karaslice
Karaslice now matches the feature set of desktop slicers like OrcaSlicer, Cura, and PrusaSlicer. New in the C++ engine: Adaptive Layer Height (thinner layers on curves, thicker on flats), Arachne Variable-Width Perimeters (eliminates thin wall gaps), Ironing (glass-smooth top surfaces), Fuzzy Skin (textured outer walls), and Multi-Color GCode with wipe tower and tool changes. New Cloud Printer panel lets you connect your printer (Bambu Lab, Creality, OctoPrint/Klipper via OctoEverywhere, Prusa Connect) and send GCode directly from the browser. Seam Painting and Paint-on Supports let you control exactly where seams and supports are placed. All available in the Pro tier.
March 28, 2026
Central Brain AI Autopilot, Pro Tier, Smart Split, Cloud Printers
Karaslice is now powered by the Central Brain — an autonomous AI that optimizes your 3D printing experience in real-time. The Brain learns from every mesh you process, improving settings predictions, repair strategies, and print quality automatically. New Pro tier ($34.99/mo) unlocks: AI Smart Split (decompose models into logical parts like arms, legs, doors), Cloud Printer Integration (send GCode directly to Bambu Lab, Creality Cloud, OctoEverywhere, Prusa Connect), Paint Tools (seam painting, support painting, color assignment), Adaptive Layer Height, Arachne variable-width perimeters, Ironing, Fuzzy Skin, and Multi-Color/Material support. Standard tier remains at $19.99/mo with all existing features. A/B experimentation framework and auto-rollback ensure the Brain never degrades your experience.
March 27, 2026
iOS v2.0: Full Feature Parity — 11 Panels, Cloud Slicing, Stream Parser, 1,500+ Tests
Karaslice iOS reaches full feature parity with 11 panels matching the web app. Five new tools: Analyze (defect overlays, quality scoring), Edit (flip normals, smooth, decimate, weld), Prepare (auto-orient, printer fit, printability score), Reconstruct (voxel/shell/point cloud), and History (undo/redo snapshots). Cloud slicing fallback auto-routes large meshes to Cloud Functions when device memory is low. Stream STL parser handles 100MB+ files without crashes. Progressive decimation keeps peak memory safe. AI tools and cloud features gated behind paid subscription. Branded loading screen with real-time progress bar. 1,500+ tests passing across 15 new suites.
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.