Posted by tux-lab on Apr 18, 2012; 12:11am
URL: https://forum.librecad.org/DXF-compatibility-was-Unit-Conversion-DXF-compatibility-tp5587846p5647912.html

I completed the first batch of bottle openers.    I am still working on documenting the process, but if any of the LibreCAD developers, or anyone you think contributed to LibreCAD and would like a bottle opener, or anyone who replied to this thread, email me and I'll mail you one.   Or drop by for a visit If you are in the Los Angeles area.  The size is relatively small, ~ 4" x .5" x .1", machined from 304ss, then tumbled and burnished to break the sharp corners, then electrochemically etched.

The bottle opener was drawn with FreeCAD because there are some arc to arc tangential relationships that I didn't know how to accomplish with LibreCAD.  However, LibreCAD was used to layout the machining tool path and find the end points for writing g-code.    I had to convert the units from inch to millimeter for drawing with FreeCAD then used LibreCAD to convert the FreeCAD dxf export back to inch.  It worked quite well.

The price is Free as in Freedom.    While I can't buy everyone a beer and this is not exactly the best bottle opener I've used, it does get the job done and it's made with open source software in a relatively free country.

As a disclaimer, The general shape of the bottle opener and the open source aspect won't change, but this is an evolving project and the cavity may be removed or modified to reduce the machining time which is currently way too long.

Thanks again to LibreCAD and other open source communities that made this bottle opener project possible.  

thanks,

John
project.tuxlab@gmail.com