Bilingual

3D Printing a Brain (2021)
25 days ago
- The project involved creating a 3D-printed brain trophy from an MRI scan in 2021.
- The process included converting DICOM to a mesh, cleaning in Blender, printing halves on an SLA printer, casting silicone molds, pouring pewter, and assembling with epoxy.
- A custom base was made using a router and chamfer bits, with a 3D-printed plaque.
- Key learnings included medical file types, new manufacturing techniques, and achieving a polished final result.
Mesh Welding and Repair for 3D Printing
24 days ago
- Mesh Welding Repair helps prepare 3D models for slicing by welding overlapping wires to strengthen connections and improve stability.
- It repairs broken or incomplete meshes that slicers may reject, ensuring surfaces are properly connected before printing.
- The tool is part of Beaver Tools, a collection of Mac utilities available on the Mac App Store, each solving specific problems.
Common 3D Benchy Problems, Causes and Fixes
22 days ago
- The 3D Benchy is a popular test print for FDM 3D printers, designed to evaluate performance without supports, using features like curved surfaces and overhangs.
- Common defects include stringing (caused by poor retraction or high temperature), over-extrusion (from incorrect flow or E-steps), and under-extrusion (due to clogs or low temperature).
- Other issues are warping (from poor bed adhesion), layer shifting (loose belts or high speed), poor bridging (insufficient cooling), and overhang problems (slow cooling or fast printing).
- Additional defects are Z-banding (Z-axis inconsistencies), ghosting (vibration), top layer gaps (few top layers or under-extrusion), elephant’s foot (hot bed or nozzle too close), dimensional inaccuracy (incorrect steps or shrinkage), and surface roughness (wet filament or extrusion issues).
- To inspect a Benchy, check overall shape, hull smoothness, first layer, cabin windows, chimney roundness, and dimensions with calipers, using defects as clues for tuning settings like temperature, speed, and calibration.
- The Benchy serves as a diagnostic tool for identifying and fixing printer problems by adjusting one setting at a time and comparing results to improve future prints.
Autonomous flying umbrella follows and shields users from rain and sunlight
22 days ago
- Most structural parts were 3D printed.
- The studio extends a two-decade investigation into manufacturing with living systems, from bacterial pigments to biodegradable footwear.
- Researchers at Yonsei University and international collaborators developed a floating device that converts movement into energy for water testing and microbial disinfection.
- Lovefrom designed an EV with clean, sweeping volumes, free from traditional front-mid engine and rear gearbox constraints.
- Audi revived the Auto Union Lucca as a streamlined 1930s record car shaped by aerodynamics and road speed.
Show HN: Jdan's Japan subway station icons
19 days ago
- The webpage features 3D printable subway station icons for Tokyo's transit systems designed by jdan.
- It includes detailed listings for JR East, Tokyo Metro, and Yurikamome lines with line codes, colors, and station numbers.
- The models are provided for personal use under a Creative Commons NonCommercial license and are unofficial, with no affiliation to transit operators.
Stenchill: 3D Printable Solder Paste Stencil Generator
10 days ago
- StenchillBeta provides a free service to generate 3D-printable PCB stencil files from uploaded Gerber files.
- 3D-printed stencils are suitable for prototyping and small batches, especially for components 0603 and larger.
- The platform offers features like a KiCad plugin, a step-by-step guide for beginners, and user community previews.
- Recommended 3D printing settings include PLA or PETG material, 0.2mm nozzle, 0.1mm layer height, and 100% infill for optimal results.
- Stencil use simplifies solder paste application, speeding up PCB assembly compared to manual syringe methods.
Print a Stencil – SVG to 3D Printing PCB solder paste stencil
9 days ago
- SVG2Stencil is a tool that converts SVG or Gerber paste layer files into STL files for stencil creation.
- Optional edge cuts can be specified for board boundaries using Gerber or SVG files.
- Configurable stencil parameters include size (width, height, thickness), detail level (resin option for small apertures), and board lip settings with height, wall thickness, and fit clearance.
- Supports interactive features like drag to rotate and scroll to zoom for preview before downloading STL.

Hasty Briefsbeta

3d printing

3D Printing a Brain (2021)

Mesh Welding and Repair for 3D Printing

Common 3D Benchy Problems, Causes and Fixes

Autonomous flying umbrella follows and shields users from rain and sunlight

Show HN: Jdan's Japan subway station icons

Stenchill: 3D Printable Solder Paste Stencil Generator

Print a Stencil – SVG to 3D Printing PCB solder paste stencil