Create Draft/Cutaway Across Half A Cylinder Face

[alarke]

OS: Ubuntu 14.04.4 LTS
Word size of OS: 32-bit
Word size of FreeCAD: 32-bit
Version: 0.16.6698 (Git)
Build type: None
Branch: master
Hash: ca7c5d31a4d61f32a25b71025b14641a6e378328
Python version: 2.7.6
Qt version: 4.8.6
Coin version: 4.0.0a
OCC version: 6.8.0.oce-0.17

Hi All,

I'm trying a create a draft/cutaway across the face of a cylinder but only on part of the face. The attached file seems a bit of a cludge and I can't add a fillet to it. Is there a better/more elegant way to do this. Advise and suggestions greatly appreciated.
Thanks in advance
A.

[cox]

You can use help geometry

Screenshot_20160501_134219.png (24.58 KiB) Viewed 2421 times

For explanation refer to NormandC's writeup of this tecnique for hole in cylinder.

[cox]

In version 0.17 this could be done simpler, this version is at the time of writing unstable and is not recommended for production use, only for play development or bug-hunting.

Here is an example of possible future workflow. This model is parametric and can be controlled in the following manner.

Cylinder: radius, hight, angle
Slope: Sketch Angle constraint

It would also be possible to control the slope of the cut by a plane instead of a sketch constraint.

Screenshot_20160501_150457.png (39.79 KiB) Viewed 2409 times

[alarke]

Many thanks Cox.

I was hoping something like the 0.17 functionality might have been baked in by now and I'd somehow missed it, but the help geometry method will work just fine. Thanks for taking the time to answer. Much appreciated.

A.

[NormandC]

Hi,

OS: Ubuntu 14.04.4 LTS
Word size of OS: 32-bit
Word size of FreeCAD: 32-bit
Version: 0.16.6698 (Git)

It looks like you are using the Daily Builds PPA version. Am I right?

We've been discussing how to go forward with the daily builds, there were some problems that prevented it from providing updates for the last month. Considering the huge changes between 0.16 and 0.17, and the fact that the latter has introduced bugs, we've decided to allow both packages to be installed at the same time, with the daily package to be used as testing and bug reporting. This means that we have to change the name of the package in the Daily Builds PPA. Once we resume updates (hopefully soon), to update your version you will have to install a separate package.

See Ubuntu Stable and Daily PPA: installing both FreeCAD versions