Five axis mill

p.lopes
https://www.youtube.com/watch?v=doC5aakMVxc part 1 Uses hydrolic drive for A and B axis.

https://www.youtube.com/watch?v=MC0EnJ4XK2M by p.lopes

Fusion360 cad files.

grblgru
https://www.youtube.com/watch?v=zuDK-uluB6g five axis arduino mega controller.

https://github.com/fra589

https://github.com/fra589/grbl-Mega-5X forked from https://github.com/gnea rbl and https://github.com/cprezzi/grbl-LPC is a no-compromise, high performance, low cost alternative to parallel-port-based motion control for CNC milling. This version of Grbl runs on an Arduino Mega2560 only. The controller is written in highly optimized C utilizing every clever feature of the AVR-chips to achieve precise timing and asynchronous operation. It is able to maintain up to 30kHz of stable, jitter free control pulses.

It accepts standards-compliant g-code and has been tested with the output of several CAM tools with no problems. Arcs, circles and helical motion are fully supported, as well as, all other primary g-code commands. Macro functions, variables, and most canned cycles are not supported, but we think GUIs can do a much better job at translating them into straight g-code anyhow. Grbl includes full acceleration management with look ahead. That means the controller will look up to 24 motions into the future and plan its velocities ahead to deliver smooth acceleration and jerk-free cornering.

software
http://www.cnc-toolkit.com/index.html

http://www.doughtydrive.com/ one of the main features of the Doughty Drive's unique design is that there is NO backlash. Now incorporates slew bearings with a 28mm hole through the centre, enabling cables, hoses etc. to pass. With a reduction ratio of 33.333 : 1, it gives great holding torque of 20 ft/lbs - 27 Nm. This ratio gives a very good resolution, 66,666.666 steps per rev, and 185.185 micro steps per deg., with positional repeatablity of + - 30 arc seconds. https://www.youtube.com/watch?time_continue=4&v=TZSFcBYr8d8&feature=emb_logo

http://www.cnc4free.org/

https://www.youtube.com/watch?v=wTh0wofb5_w diy B and C axis build.

links
Lathe