Ultimaker/Cura
Dec 2024 – Oct 2025
8 Months active
Languages Used
INIcfgIniPython
Technical Skills
Configuration Management3D Printing Configuration3D PrintingConfigurationFirmware ConfigurationProfile Management
THeijmans
PROFILE
Theijmans
Tijmen Heijmans developed and refined 3D printing configuration profiles for Ultimaker/Cura, focusing on optimizing print quality, reliability, and workflow efficiency across multiple materials and printer models. Heijmans implemented targeted adjustments such as build volume temperature limits, retraction tuning, and wall thickness parameterization, using INI and Python to manage and validate configuration changes. His work included introducing new quick and visual print profiles, enhancing top surface and bridge skin quality, and aligning firmware and slicer settings for improved dimensional accuracy. Through version-controlled commits and collaboration with QA, Heijmans ensured robust, maintainable profile management that addressed both user experience and technical requirements.
Overall Statistics
Feature vs Bugs
79%Features
Repository Contributions
16Total
Bugs
3
Commits
16
Features
11
Lines of code
587
Activity Months8
Your Network
35 people
Work History
October 2025
4 Commits • 3 Features
Oct 1, 2025Monthly work summary for 2025-10 focusing on key accomplishments, major fixes, impact, and technologies demonstrated for Ultimaker/Cura.
4 Commits • 3 Features
Oct 1, 2025Monthly work summary for 2025-10 focusing on key accomplishments, major fixes, impact, and technologies demonstrated for Ultimaker/Cura.
October 2025
September 2025
3 Commits • 2 Features
Sep 1, 2025September 2025 monthly summary for Ultimaker Cura: Focused on enhancing print reliability and slicing accuracy through profile-level parameterization and targeted bug fixes. Delivered three critical updates across Ultimaker S6/S8 and FDM workflows, enabling more consistent parts and reduced waste.
September 2025
3 Commits • 2 Features
Sep 1, 2025September 2025 monthly summary for Ultimaker Cura: Focused on enhancing print reliability and slicing accuracy through profile-level parameterization and targeted bug fixes. Delivered three critical updates across Ultimaker S6/S8 and FDM workflows, enabling more consistent parts and reduced waste.
August 2025
2 Commits • 1 Features
Aug 1, 2025August 2025 monthly summary for Ultimaker/Cura: Focused enhancements to the Ultimaker S8 printer profile, delivering precision improvements and performance optimizations. Highlights include refined XY offset, hole offset, and inset direction adjustments across multiple material and layer height combinations to refine print accuracy; and a new speed_roofing setting to optimize roofing layer printing speed and efficiency. All work is traceable to commits PP-650 R3 and PP-650 R5, ensuring reviewable changes. No major bug fixes recorded for this module this month, with improvements contributing to reliability and end-user print quality.
2 Commits • 1 Features
Aug 1, 2025August 2025 monthly summary for Ultimaker/Cura: Focused enhancements to the Ultimaker S8 printer profile, delivering precision improvements and performance optimizations. Highlights include refined XY offset, hole offset, and inset direction adjustments across multiple material and layer height combinations to refine print accuracy; and a new speed_roofing setting to optimize roofing layer printing speed and efficiency. All work is traceable to commits PP-650 R3 and PP-650 R5, ensuring reviewable changes. No major bug fixes recorded for this module this month, with improvements contributing to reliability and end-user print quality.
August 2025
July 2025
2 Commits • 1 Features
Jul 1, 2025July 2025—Ultimaker Cura development: Delivered faster, higher-quality prints and strengthened safety/robustness through targeted profile work and thermal model alignment. Key improvements include new S8 quick profiles for ABS, PETG, PLA, and Tough PLA to optimize print speed and cooling, plus refinements to existing quality profiles (temperature, wall speed, line width) to improve surface finish and dimensional accuracy. A critical bug fix aligned Build Volume Temperature (BVT) limits with the F4 thermal model to prevent overheating/underheating and enhance stable temperature control during prints. These efforts reduce print failures, shorten iteration cycles, and improve end-user reliability and factory throughput.
July 2025
2 Commits • 1 Features
Jul 1, 2025July 2025—Ultimaker Cura development: Delivered faster, higher-quality prints and strengthened safety/robustness through targeted profile work and thermal model alignment. Key improvements include new S8 quick profiles for ABS, PETG, PLA, and Tough PLA to optimize print speed and cooling, plus refinements to existing quality profiles (temperature, wall speed, line width) to improve surface finish and dimensional accuracy. A critical bug fix aligned Build Volume Temperature (BVT) limits with the F4 thermal model to prevent overheating/underheating and enhance stable temperature control during prints. These efforts reduce print failures, shorten iteration cycles, and improve end-user reliability and factory throughput.
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary for Ultimaker Cura: Delivered a targeted feature set that enhances print quality and user experience for the Ultimaker S8. Implemented Visual Print Profiles for PLA and Tough PLA at 0.15mm layer height, with tuned print temperatures and retractions to optimize visual quality and consistency. The feature was released under PP-632 with commit bd5069bc82f98792c25280ad9573b1e978149f95, aligning with the project’s release cadence and quality gates. This work strengthens on-device usability and reduces setup time for high-quality visual outputs on S8, contributing to faster value realization for customers and clearer material-specific tuning workflows. Overall impact: Accelerated time-to-value for S8 users, improved perceived print quality, and reinforced Cura’s capability to deliver material- and printer-specific presets. Technologies/skills demonstrated: profile-based tuning, material-specific parameter optimization, version-controlled feature release, and cross-functional collaboration with QA and release engineers to validate and ship new presets.
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary for Ultimaker Cura: Delivered a targeted feature set that enhances print quality and user experience for the Ultimaker S8. Implemented Visual Print Profiles for PLA and Tough PLA at 0.15mm layer height, with tuned print temperatures and retractions to optimize visual quality and consistency. The feature was released under PP-632 with commit bd5069bc82f98792c25280ad9573b1e978149f95, aligning with the project’s release cadence and quality gates. This work strengthens on-device usability and reduces setup time for high-quality visual outputs on S8, contributing to faster value realization for customers and clearer material-specific tuning workflows. Overall impact: Accelerated time-to-value for S8 users, improved perceived print quality, and reinforced Cura’s capability to deliver material- and printer-specific presets. Technologies/skills demonstrated: profile-based tuning, material-specific parameter optimization, version-controlled feature release, and cross-functional collaboration with QA and release engineers to validate and ship new presets.
May 2025
March 2025
1 Commits
Mar 1, 2025March 2025 Monthly Summary – Ultimaker/Cura: Focused on stabilizing extrusion behavior by tuning retraction prime in the UM S8 CC+ profile, delivering a more reliable print path for 0.4mm nozzle and 0.2mm layer height. The change reduces extrusion issues after retraction and aligns with high-precision printing use cases.
March 2025
1 Commits
Mar 1, 2025March 2025 Monthly Summary – Ultimaker/Cura: Focused on stabilizing extrusion behavior by tuning retraction prime in the UM S8 CC+ profile, delivering a more reliable print path for 0.4mm nozzle and 0.2mm layer height. The change reduces extrusion issues after retraction and aligns with high-precision printing use cases.
February 2025
2 Commits • 2 Features
Feb 1, 2025February 2025 — Ultimaker/Cura focused on feature-driven quality improvements for single- and multi-material prints. Delivered Top Surface Flow Rate Alignment to align top-layer flow with material flow, reducing gaps and improving top-surface finish, with commit 3e250553a4790d6b6f3a8cea546ec26ac6e4e714. Implemented Simplify Multi-Material Retraction to avoid over-priming on the Ultimaker S8 by removing retraction_extra_prime_amount, with commit 0ba901e3454ecb459e46f05c4dc822ee6d060be8. Together, these changes enhance print reliability, reduce rework, and improve customer satisfaction. No explicit bugs were logged for this period in the provided data. Technologies demonstrated include firmware-level feature tuning, material flow control, and multi-material retraction simplification.
2 Commits • 2 Features
Feb 1, 2025February 2025 — Ultimaker/Cura focused on feature-driven quality improvements for single- and multi-material prints. Delivered Top Surface Flow Rate Alignment to align top-layer flow with material flow, reducing gaps and improving top-surface finish, with commit 3e250553a4790d6b6f3a8cea546ec26ac6e4e714. Implemented Simplify Multi-Material Retraction to avoid over-priming on the Ultimaker S8 by removing retraction_extra_prime_amount, with commit 0ba901e3454ecb459e46f05c4dc822ee6d060be8. Together, these changes enhance print reliability, reduce rework, and improve customer satisfaction. No explicit bugs were logged for this period in the provided data. Technologies demonstrated include firmware-level feature tuning, material flow control, and multi-material retraction simplification.
February 2025
December 2024
1 Commits • 1 Features
Dec 1, 2024December 2024 — Ultimaker/Cura: Factor 4 build volume temperature optimization. Implemented a targeted profile adjustment to optimize print conditions for Ultimaker Factor 4, setting Breakaway Build Volume Temperature (BVT) to a maximum of 40°C across multiple layer heights for the Factor 4 material. This work reduces the risk of over-temp conditions while maintaining material performance, improving print reliability for Factor 4 profiles. The change is documented under PP-547 and committed as 36534579edeb06d62fe42c0c951650aaae3c1bea, and has been validated against representative prints to support smoother production workflows.
December 2024
1 Commits • 1 Features
Dec 1, 2024December 2024 — Ultimaker/Cura: Factor 4 build volume temperature optimization. Implemented a targeted profile adjustment to optimize print conditions for Ultimaker Factor 4, setting Breakaway Build Volume Temperature (BVT) to a maximum of 40°C across multiple layer heights for the Factor 4 material. This work reduces the risk of over-temp conditions while maintaining material performance, improving print reliability for Factor 4 profiles. The change is documented under PP-547 and committed as 36534579edeb06d62fe42c0c951650aaae3c1bea, and has been validated against representative prints to support smoother production workflows.
Activity
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Quality Metrics
Correctness81.2%
Maintainability86.2%
Architecture77.6%
Performance73.8%
AI Usage20.0%
Skills & Technologies
Programming Languages
INIIniPythoncfg
Technical Skills
3D Printing3D Printing Configuration3D Printing Slicer Configuration3D Printing Slicing SoftwareConfigurationConfiguration ManagementFirmware ConfigurationProfile ManagementSlicer Settings
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