Donation Sponsor

$5 $10 $25 $100 $200 Other

If you are not sure or not able to commit to a regular donation, but still want to help the project, you can do a one-time donation, of any amount.

Choose freely the amount you wish to donate one time only.

We call sponsoring the act of donating money recurrently to the FreeCAD project. You can do that as an individual or as a company or institution, through different channels or platforms, depending on your preferences.

Sponsoring FreeCAD allows its developers to count on a steady flow of income, so it allows the FPA to plan things ahead, and the FreeCAD developers to invest themselves more seriously into FreeCAD.

To encourage persons and companies to sponsor the FreeCAD project, we have created different sponsoring tiers. When donating regularly to the project, unless you prefer to stay anonymous, your name, company name and/or logo will be featured on this website, depending on the tier you fit into:

♥ Normal sponsor : from 1 USD / 1 EUR per month. You will not have your name displayed here, but you will have helped the project a lot anyway. Together, normal sponsors maintain the project on its feet as much as the bigger sponsors.
🥉 Bronze sponsor : from 25 USD / 25 EUR per month. Your name or company name is displayed on this page.
🥈 Silver sponsor : from 100 USD / 100 EUR per month. Your name or company name is displayed on this page, with a link to your website, and a one-line description text.
🥇 Gold sponsor : from 200 USD / 200 EUR per month. Your name or company name and logo displayed on this page, with a link to your website and a custom description text. Companies that have helped FreeCAD early on also appear under Gold sponsors.

Instead of donating each month, you might find it more comfortable to make a one-time donation that, when divided by twelve, would give you right to enter a sponsoring tier. Don't hesitate to do so!

Choose freely the amount you wish to donate each month.

Please inform your forum name or twitter handle as a notein your transfer, or reach to us, so we can give you proper credits!

OSE Piping Workbench

Introduction

OSE Piping Workbench creates pipes and fittings. It is a part of Open Source Ecology and Open Source Ecology Germany. To use all its features install the Dodo Workbench.

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Customization

OSE Piping stores dimensions in CSV-files in the table directory in the workbench directory. Edit these CSV files if you want to add new or to change dimensions of the fitting.

Pipe

A pipe is described by its outer diameter OD, its wall thickness Thk and its height H.

To create a pipe, click in OSE piping workbench. Select pipe dimensions and click \"OK\".

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To add new dimensions adjust CSV pipe.csv file.

Wikipedia on Nominal Pipe Size (NPS).

Elbow

An elbow is described by an angle alpha, outer pipe diameter POD, inner pipe diameter PID, H, J, and M.

To create an elbow, click .

![](https://raw.githubusercontent.com/FreeCAD/FreeCAD-documentation/master/wiki/images/OSE_Piping_elbow_CAD_screenshot.png ) To add new elbows, adjust **elbow.csv** file.

Sweep Elbow

A sweep elbow is a special elbow with larger radius of the bent part. It is described by outer pipe diameter POD, pipe thickness PThk, G, H, and M. To create a sweep elbow, click .

![](https://raw.githubusercontent.com/FreeCAD/FreeCAD-documentation/master/wiki/images/OSE_Piping_sweep_elbow_CAD_screenshot.png ) To add new sweep elbows, adjust **sweep-elbow.csv** file.

⏵ documentation index > User Documentation > Addons > External Workbenches > OSE Piping Workbench