Tex-Tools

A collection of textile engineering tools used for research and development of caving, climbing, and rescue gear.

Owner: Southeast Expedition Medical, LLC, Chris Lee

Purpose

The goal of this repository is to support engineering exploration, prototyping, and early-stage analysis of sewn and textile-based hardware systems.

These tools are intended to help with:

• Design iteration
• Parameter studies
• Preliminary strength estimates
• Documentation of engineering assumptions

Current Contents

• bartack_calculator/bartack_calc.py: Bartack design strength calculator for webbing-on-webbing joints
• bartack_calculator/materials_library.json: User-editable material library for thread and webbing properties
• bartack-calc.md: Detailed usage and model notes for the bartack calculator

Safety and Liability Notice

These scripts are provided for research and engineering development purposes only.

• No warranty is provided, express or implied.
• The authors and contributors assume no liability for any direct, indirect, incidental, special, exemplary, or consequential damages arising from use of this repository.
• Outputs are engineering estimates and are not certification data.
• Physical testing, validation, and professional engineering judgment are required before any field use.

Use of these scripts is entirely at your own risk.

License

This repository is licensed under the GNU General Public License, version 3 or any later version (GPL-3.0-or-later).

See the full license text in LICENSE.

Copyleft intent:

• Derivative works must remain open source under GPL-compatible terms.
• Source code for derivative distributions must be made available under the same license obligations.

Contributions

Contributions are welcome if they improve model clarity, engineering transparency, and safety margins.

When contributing:

• Clearly document assumptions and limits
• Prefer conservative defaults in safety-relevant calculations
• Include validation notes when changing equations or factors

Source File Header Framework

Contributors should include a source header in new scripts and modules. Use this template and update the placeholders:

#!/usr/bin/env python3
# <file-name> - <short description>
# Copyright (C) <year> Southeast Expedition Medical, LLC, Chris Lee
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
# SPDX-License-Identifier: GPL-3.0-or-later

Status

This repository is under active engineering development. Interfaces, assumptions, and models may change over time.