Lathe

Gear thread cutting

 * http://www.youtube.com/watch?v=KHZFj8qAycE from http://www.mainsteam.co.uk/steam_launch.htm
 * http://www.youtube.com/watch?v=xRmQpSGUAY8 Stationary mill rotating involute gear cutter. The lathe moves the blank through the cutter, cutting a v-shape. Two stepper motors needed, one rotates the blank, other moves platform forward.
 * http://www.youtube.com/watch?v=-2-uOi1uFJU This method preferred mill and lathe combo.
 * http://www.youtube.com/watch?v=ie7dNOLgno0 Spinning tap in chuck cuts worm wheel . Use one geared DC motor mounted on platform, stepper provides x-axis. The blank is fits over vertical shaft, spinning freely.

Stepperhead
http://www.lathes.co.uk/stepperhead/ Designed and built by Alan Jackson, the Stepperhead is an attempt to combine, in one unit, the range of facilities found in a medium sized lathe and a small vertical/horizontal milling machine. In the 1950s David Urwick had designed and built the ingenious and versatile Metalmaster http://www.lathes.co.uk/metalmaster/, a device that combined a lathe and milling machine without unduly compromising the attributes of either.
 * http://www.lirtex.com/robotics/diy-cnc-machine/
 * http://twilightrobotics.com/cnc/cncnot1 how not to make a cnc

lathe 1
http://www.youtube.com/watch?v=7MUxivrx_MU Harbor freight mini lathe

http://morgandemers.com/ making a lathe face plate with aluminium casting

http://www.youtube.com/watch?v=spwfHuNSJXA http://www.youtube.com/watch?v=oJHDSY7tZ8c quick change toolpost

lathe
http://www.youtube.com/watch?v=pTArvTJt5eI build hand tool lathe Building a Hand Drill Lathe (How To)

http://www.youtube.com/watch?v=7wejoxolvjw Homemade Wood lathe Duplicator using an angle grinder King Arthur wheel on grinder for lathe work DIY lathe for woodwork

http://www.youtube.com/watch?v=dz8dxXfm2hs Lathe from old DRILLPRESS

www.youtube.com/watch?v=40vQHTt9s-A micro or mini lathe http://www.youtube.com/watch?v=lwmpFI1kDww Homde made lathe BEVEL block bearings, shows pictures.

http://www.youtube.com/watch?v=DXAzJE9Zs8s Huge lathe built from scratch with pictures.

check out sherline 4000 mini micor lathe

Lathe face cutters

milling http://www.cnczone.com/forums/linear_rotary_motion/189054-machining_large_worm_gear.html

http://www.youtube.com/watch?feature=player_detailpage&v=J0o3W4_LRBw&t=494 , http://www.youtube.com/watch?v=xRmQpSGUAY8 gear making

http://www.youtube.com/watch?v=oSeMX9SZXXY helical gear is cut on lathe. this is preferred can be reproduced.

http://www.youtube.com/watch?v=HAtziCsUj5Q Helical with CNC machine.

hobbynut channel
http://www.youtube.com/watch?v=8UBxNPbg0ls  CNC or mill(manually) cutting worm gear. adapt with DIY drill lathe. Hand drill rotates at high speed with a cutting tool, lathe part is done at angle to cut worm pattern out of plastic. The angle of the drill bit determines how thick or thin the worm gear edges are.

tutorial
http://www.mini-lathe.org.uk/12-hobbing-the-worm-wheel.shtml telescope worm wheel

Lathe brands
Unimat Lathe http://www.junkmail.co.za/leisure/model-toys/gauteng/johannesburg/west-rand/unimat-lathe-30047005

Minnie hobby ??? no such brand http://www.junkmail.co.za/leisure/model-toys/gauteng/johannesburg/minnie-hobby-lathe-29793421

Myford lathe

http://qtul.com/cnc-rotary-tables/accessories/80mm-3in-chuck-with-backplate.html $120