Lathe

Turek
https://www.youtube.com/watch?v=_Jf0F6CiQcQ Hey, you're doing a great job there! The only thing I don't personally like is the center-height to beds' width ratio. The more the height you set your spindle at without either widening the beds or reinforcing the overall structure, the lighter the duty the machine will be able to support during normal operation before it starts to flex/vibrate.https://www.youtube.com/watch?v=LY6wmHL48H0. quill lock, Shimming of any plane perpendicular to another in the x,y and z axis is done with a granite cube and describes method of using Moglice or JB Weld to create a headstock. Lathe uses a 1:1 cement, epoxy mixture as cheaper alternative to Moglice. It forms a paste that takes 24 hours to cure allowing for the alignment of the headstock with lathe bed with lathe head tramming method. channel floweringelbow 25% slow cure epoxy, 69% iron powder, 5% aluminium oxide, 1% magic dust? for mating two pieces of metal. When aligning two elements, take dial indicator reading as you tighten, not afterwards.

journals
https://my.mech.utah.edu/~bamberg/research/PrinciplesOfRapidMachineDesign/Principles%20of%20Rapid%20Machine%20Design.pdf principles of Rapid Machine Design thesis. Eberhard Bamberg M.Sc., Advanced Manufacturing Systems Brunel University, 1993. p.83 The use of polymer eliminates the need for precision surfaces at the joint between the bridge and the base. Instead, the bridge is set upon an O ring which is laid along the perimeter of the joint. p.111 split tube epoxy damping, concrete damping. p.144 use round tubes instead of square tubing.

gbwm


https://www.youtube.com/watch?v=vlNlzDfhprY Step model of this machine is available for people who joined the channel support membership. I might do "detailed" plans for it but at this moment I share just the step file. Inspired by https://www.youtube.com/watch?v=E4GT7Atq7ug&list=PLfHKOcnbjzKwIgHi_YfNaqDZzhY0oARtp which uses H beam is made out of two T beams welded together with large flatbar and reinforced with square tube or Uchannel sections. Zaxis column are angle iron pieces with flatbar diagonally in center making a side to side square tube like structure drilled and tapped for linear rail each(6min33), it is more rigid than just a square tube for the same dimension. The back of the Zaxis column is reinforced with Uchannel that has a section removed at an angle. (7min21). Large rigid table for hoisting Yaxis from the ground for further wedling and drilling, is built out of Uchannels(9min). The Yaxis base is so heavy that the table is held rigid in the center with a hydraulic jack. In video nr.2 of the playlist the Yaxis is lifted on the rigid table built in vid nr.1. It's not clear how the ways were milled for the linear rails(see Moglice, Shimming, hand scraping). The video is in Polish, Google's algorithms don't list if for an English audience and the low view count betrays that is probably one of the best lathe and mill videos, showing clearly how to build a large heavy duty mill out of scrap Uchannels and Tchannels. Dowlpin spacing of linear rails guid pin linear rail vid.9 vid1 to 14 pictures at https://nippybox.com/v/625175 in zip file. See picture Screenshot(234).png for screw/dowlpin combo to straighten the guide rail(is forms a snake pattern its default state). https://www.youtube.com/watch?v=cqYJS27aC4w similar type heavy industrial design channel, very slow(several months) concrete cure(no epoxy) for very cheap vibration damping solution. floweringelbow CNC heavy duty DIY CNC milling machine playlist 33vids.

Dexter144
https://www.youtube.com/watch?v=kCldgHJ5e9M,(tailstock pt.5) channel Dexter144 part3 lathe build with two pillow block bearings. Aligning bearings with round shaft(6min). Mod the design by installing an additional tapered roller bearings opposite each pillow block, allowing for axial loads and increased radial load bearing surface area(use JBWeld or cement/epoxy for vibration damping). https://www.youtube.com/watch?v=gjNuzIIXJeY lathe headstock design https://www.youtube.com/watch?v=Y0pBPqj5lR8 another spindle design

lets learn something
https://www.youtube.com/watch?v=SmQ6uNSkGdE DIY mill, angular roller bearings to make spindle and see rather b welding roller bearings. Lathe headstock build with angular roller bearings from https://www.youtube.com/watch?v=gjNuzIIXJeY (channel Mr. Rany Homemade) https://www.youtube.com/watch?v=a6a5HTsYCSY from channel Lets learn something https://www.youtube.com/watch?v=-9o0GsKqx-M placing two thrust bearings.

chipload
https://www.youtube.com/watch?v=J7QdpF-mVbc&list=PLBZ7MNtrlcsMx6BnlLjA1MIX_2MO5rzRU part 7 using epoxy filled metal for concrete lathe bed(http://www.epox.de). See Epoxy granite for super strong epoxy with diamonds by channel Tech ingredients.

https://www.youtube.com/watch?v=cnQjjkuJXWc STUDER has been manufacturing machine beds from its own specially developed Granitan® mineral casting for decades. In comparison with machine beds made from iron-based materials, Granitan® machine beds have a more favorable thermal and better cushioning behavior. Temporary temperature fluctuations are largely compensated by the favorable thermal behavior of Granitan®. The excellent cushioning behavior of the machine bed ensures outstanding surface quality of the ground workpieces. Far fewer energy and raw material resources are consumed in the manufacture of Granitan®, in comparison with the manufacturing process for steel. https://www.studer.com/en/

danger diy
https://www.youtube.com/watch?v=pAKDnjqIEF4 Building a DIY CNC metal lathe with CNC control using Mach 3. Using steel, aluminum, bolts, nuts, and some parts from Amazon i created a 10 inch x 24 inch CNC metal lathe. Using a somewhat on the fly design of a metal lathe with a CNC controller. This video goes over the lathe build and there is a separate video (offered at the end and during the video) for the CNC drive that also covers a recap of the design of the lathe. I also thought it would be a good idea to hold a piece of aluminum I was sanding with a flap disc... It wasn't a good idea, but a painful lesson as I almost cut off my left thumb.

spindle
https://www.youtube.com/watch?v=q7qRK0xWVzc bridgeport clone, cast iron hydrolic cylinder from c330 tracktor for spindle by steelcraft https://www.youtube.com/watch?v=HOIo2V8LRCk&list=RDCMUCEaov0EXiRIZ1vqYKO6Oa-w&start_radio=1&rv=HOIo2V8LRCk&t=0 spindle design channel PG BR https://www.youtube.com/watch?v=fZjEoP9w8bA&list=RDCMUCNkxUXuAh2RBEjwCLWz5OwQ&start_radio=1&rv=fZjEoP9w8bA&t=0 spindle design channel Nilton Polydoro

robrenz
https://www.youtube.com/watch?v=grUdsTTRGl4 precision spindle make https://www.youtube.com/watch?v=LUggzM0JOlI ultra precision spindle build https://www.youtube.com/watch?v=Pmplff_f5pI suburban tool, what it takes to repair spindle. https://www.youtube.com/watch?v=Letjbux6qxA making collet blocks by the shed dweller'

twist
https://www.youtube.com/watch?v=IbfUaeUp7RY refs steve jordan channel https://www.youtube.com/watch?v=CLknmNHJiQ0 channel steve jordan https://www.instructables.com/Building-a-Sturdy-Lathe-Stand/

ivan mechanic
https://www.youtube.com/watch?v=YRZBgbgYMik&list=RDCMUC9uD8Msx1GfFHT6BPKUwTsw&index=4 uses the lathe spindle shaft to align the angular roller bearings. Allows you to have the spindle made first at a professional machine shop for your DIY headstock construction. Vid.4 out of playlist

francisco
https://www.youtube.com/watch?v=Y8ebK9UlHKE Francisco Murcia Projects Learn to make a Milling Machine Homemade (Z axis) step to step in a simple and practical way. Everything is made with small machinery. https://www.youtube.com/watch?v=_hwBLD4waT8 part.1 milling table https://www.youtube.com/watch?v=ss0pxgf5Z34 final part, he can't figure out how to use playlists.

Russian hacks
https://www.youtube.com/watch?v=uVlrfFkRLZg stepper on crosslide of lathe  Олег Певцов https://www.youtube.com/watch?v=5-ZVJjMU1hs cross feed by ivan mechanic https://www.youtube.com/watch?v=41EU1znG8P4 esting the function of the lathe that I have made in stages, this lathe is only about 70% and there are many more that must be improved.Thank you for watching my channel, like and subscribe to this channel, hope it will be useful https://www.youtube.com/watch?v=uVlrfFkRLZg cross slide tapered cutting with stepper https://www.youtube.com/watch?v=Y7OT4vFevxM with no music https://www.youtube.com/watch?v=pcOJBrLODSE ana diy https://www.youtube.com/watch?v=YR21-fnpdNs diy lathe from Good master channel https://www.youtube.com/watch?v=E7pzYEUX84k, https://www.youtube.com/watch?v=7SXuS7nnqe8 milling dove tails grinding stone dove tails https://www.youtube.com/watch?v=5-ZVJjMU1hs grinding stone dovetails. https://www.youtube.com/watch?v=718Dyz5EG2o flatbar bolted to bedway. https://www.youtube.com/watch?v=WXGbV2l9gN0 tailstock design  by Самодельная задняя бабка. https://www.youtube.com/watch?v=kjVCVxdQfz0 https://www.youtube.com/watch?v=z03c1RuHIvc https://www.youtube.com/watch?v=QJtmXJZqfOY https://www.youtube.com/watch?v=HRh40jICW8c

dimi


https://www.youtube.com/watch?v=IN-kDf9xmi8 cnc lathe build. U channel with ribs inserted into channel. Shimming with glass plate and foil.

Eswelding
https://www.youtube.com/watch?v=6H4lT5E6KqA

Miranda
https://www.youtube.com/watch?v=bKREUByofzE remade the entire frame out of 40x40x2 steel box and TIG welded it using a technique called winging it. As a known side effect of this technique the frame is not square, straight, coplanar, or any of the required properties for the frame of a machine like this. I solved it by shimming almost everything on it with washers of different thicknesses and a lot of brute force. In the build of the aluminium one almost everything went perfect first try, in this build I had to wrestle with it a lot, way more than I'm capable to show in a single video. The machine is obviously more rigid than the aluminium one and after a lot of fiddling with it, it is surprisingly straight where it counts and seems to even be properly trammed. As a bonus at the end of the video I decided to obliterate some aluminium and steel with the wrong dull bit and completely wrong feeds and speeds.

The Toyz
https://www.youtube.com/watch?v=N2QpwBT7cXw tailstock added at an angle

franco gallo
Here is a project I have been working on for a couple of months. The construction and mechanization of a lathe machine, I have only finished the first part of this lathe machine, i still have to place the engine, the headstock, the chuck, the tailstock and a few other things ... Each of the pieces was manufactured and hand ground. Unfortunately I could not film each and every one of the pieces made, they are many hours of work. I have had a few difficulties in this job. I have done everything self-taught, reading some books (there is not much about building lathes) and watching some tutorials on the web ... I hope I can move forward in this quarantine !! And finish as soon as possible so I can start working on iron sculptures (which I am doing this for), that is my medium and long term commissioning

Crossslide build
https://www.youtube.com/watch?v=Y09o2REiWtM

mrohny
https://www.youtube.com/watch?v=w8V8_ni5x1U lathe built with sliding angle grinder stand

Novrinal
https://www.youtube.com/watch?v=Neim58VpMPQ Homemade metal lathe episode 7 part 2, details on building bed slide and sliding rack.

https://www.youtube.com/watch?v=sMEWCtbZ9Wk&list=RDCMUC7m6NE6zh4tQX5kEPMXi2Pw&start_radio=1&rv=sMEWCtbZ9Wk&t=1854 mill playlist https://www.youtube.com/watch?v=OP1Z1ocjDb0 mill build part.3

Mateusz Doniec
https://www.youtube.com/watch?v=JsCYdcMFDA4 slotting head for milling machine. Four brass flat bar grooved for oil flow around linear head.

accidental science
https://www.youtube.com/watch?v=w5DIehtaRM4 headstock alignment. That kind of alignment accuracy is obviously very good. Except as a general rule both the lathe head stock and tail stock are purposely misaligned by roughly .001" in 10"-12" over the length of the bed both up and towards the operator. That slight misalignment is done in an effort to build in a compensation factor for both work piece weight and cutting tool pressures. It's obviously not a perfect system since both the work piece weight and cutting tool deflection can have large changes depending on what's being done or even the cutting tool material used. So it's a best case average that helps the lathe deflect towards being more accurate instead of less in most cases. And that was very clever thinking to use a weight counter balance to remove the test bars sag due to gravity.

six part lathe build, welding and destressing. The dovetail milling for bed ways is preferred over this method. https://www.youtube.com/watch?v=0BuqkRqqxyk This time I show how I've made the cross slide of my DIY metal mini lathe. No welding: even this part has been made without welding but joining the elements together with epoxy and pins, avoiding the risk of deformations. In this part only the cross slideway is shown while in the next episode I'll show the cross slide's sled. https://www.youtube.com/watch?v=5rLqkpy2UQA part8b How I've made the sled of the cross slide for my home made metal lathe. Using the same technique applied for other parts of this lathe, I didn't welded the elements, rather I put them together through glue, pins and screws to avoid deformations and achieve higher quality and precision. This time I used cyanoacrylic glue (similar to superglue) in place of epoxy, because pins and screws are enough to keep the parts in place and the elements are attached together quicker.

mainakas
https://www.youtube.com/watch?v=BpH-PKBjsZ4  Homemade Mini Lathe bed & Saddle https://www.youtube.com/watch?v=U0bb5bZ4W4g Homemade Lathe Spintle (spindle) https://www.youtube.com/watch?v=wtMaj_2R3Dc  Mini Lathe Saddle construction part 4 https://www.youtube.com/watch?v=hmWW0X7GmB8 cross slide https://www.youtube.com/watch?v=kgGLU5gOx7Y toolpost https://www.youtube.com/watch?v=M3sHTfaXzZA tailstock

LukaszM
https://www.youtube.com/watch?v=7z_6EXlxnBU pt.3 https://www.youtube.com/watch?v=IoBMffoPQY4 pt.4

geniusz K
https://www.youtube.com/watch?v=GeYB8TK1KwM 2mil views

Techy tools
https://www.youtube.com/watch?v=wsdzl_ng6ts

Fixed tailstock
tail stock cut tapers without having to gibbs tailstock.

Shimming lathes
shimming

Renato Kretschmann
https://www.youtube.com/watch?v=jDicrbqbB4A Six videos on diy lathe build in Portuguese.

Concrete lathe
lathe concrete

Youtube
https://www.youtube.com/watch?v=1-So7Ei8V2o by Maximum DIY mill build. https://www.youtube.com/watch?v=KgB9rx3AhoE The bed in the lathe - this is the base - this is the basis of the machine --- and first of all the rigidity of the machine --- and also the rigidity of the headstock depend on the bed! in the absence of a cast-iron bed - it is possible to make a reinforced concrete frame and fasten or weld to it an existing bed with guides. The linear guides are milled cast iron bar bolted to steel, with the spacer wedge held in place from either side. https://www.youtube.com/watch?v=GTEUXiDoCLc lathe rebuild 1.4mil views https://www.youtube.com/watch?v=ptdo2bSKov0 Project no.78 diy homemade mini metal lathe machine (torno) The lathe machine is for facing bronze aluminum and alloy steel, when it comes to Mild steel its a different story i tested it and you see in the video it also can work with mild steel but it make some vibrations in the head and some weird noise that im sure its not normal. Upgrades that needs to be done to the lathe machine: use another high quality Pillow block bearing, Adding a Drill press pulley System and Changing atleast 1/2 or 3/4hp motor. I hope You Enjoy Watching My Video Building a Metal Lathe Without Using a Lathe. https://www.youtube.com/watch?v=ckulUixg2w4 diy mini lathe and xy table with drill and threaded rod 5min. links to four videos, xy table out of flatbar. And plans at http://www.diygokarts.com/vb/showthread.php?t=18699.

https://youtu.be/Jn3E2QRhnNw Coordinate table with their own hands from scrap metal. Making flywheels, painting and assembling the xy table. https://www.youtube.com/watch?v=yWlOh71EW1s cnc converion of mill. Today we're converting a manual milling machine to CNC. We install high quality ballscrews, ballnuts, and angular contact bearings on first the Z axis and then the Y and X axis. We also install stepper motors. This video features tips and techniques that I have developed over the past 10 conversions or so. You'll even see hardware from the first CNC conversion I ever did that was made on a manual milling machine. I learn something new every time. Please share your own CNC conversion tips and experience in the comments below. Details: More info on the conversion kit used in this video can be found here: https://www.cncelements.com/ More info on the Precision Mathews PM-25MV milling machine used in this video can be found here:https://www.precisionmatthews.com/shop/pm-25mv/. This conversion utilizes the Centroid Acorn control board. Let me know if you would like to see video content on my specific setup: http://www.centroidcnc.com/centroid_diy/acorn_cnc_controller.html

journal bearings
lathe bearing design plain bearings or journal bearings have the best vibration damping characteristics. BEC7 roller bearings have the same tight tolerances,but not the Vibration absorption.

Router
https://www.youtube.com/watch?v=cQ332KGc-6M Lathe on router

Morse taper
http://lathecity.com/CustomDesigns/index.html https://www.youtube.com/watch?v=g0TTQVkoOZ4 by SegmentedTurner http://www.spsspindle.com Morse taper inserts into spindle. https://www.ebay.com/bhp/morse-taper-sleeve https://www.youtube.com/watch?v=a2LcYKi0o3U old tony

Mill and lathe alignment
https://www.youtube.com/watch?v=RA3Q8d4ppQs part 1 of 5 series by At-Man Unlimited Machining https://www.youtube.com/watch?v=ZaIuHNFIFNw Rollie Daddy or Rollie Dad method from gadgetbuilder.com http://manuals.chudov.com/Rollies-Dads-Method-of-Lathe-Alignment.pdf cut lathe gears

skyfire
http://www.cnczone.com/forums/vertical-mill-lathe-project-log/133172-cnc-software-forum-13.html    http://www.skyfirecnc.com

wikishare
https://www.wikishare.us/diy-cnc-gantry-mill/ links to the pages below Forum cnczone.com fixed gantry out of steel https://www.cnczone.com/forums/uncategorised-metalworking-machines/222216-cnc-2.html a portable mill http://www.mycncuk.com/threads/11206-MK1-Steel-router-build-log-1500x800x200 steel router build log FORUM https://www.wadeodesign.com/overview--gallery.html https://www.romanblack.com/onesec/DCmotor_xtal.htm This is a very simple way to use a cheap PIC to run a DC motor at a very slow speed, and for that speed to have very high acc

zealcnc
http://zealcnc.wordjot.com/posts/the-bench-top-mill-build-part-1-the-base/ 350kg diy mill. Zaxis frame bolted to y axis with 16 bolts.

Bill T
https://www.youtube.com/watch?v=7Qah4iledMQ Spindle assembly mill. https://www.youtube.com/watch?v=JuJoinOwI-Q&t=12s spindle with two angular contact bearings and morse taper 3 https://www.youtube.com/watch?v=BjyfWDR6UIo commercial spindle

Mong Tran
https://www.youtube.com/watch?v=IvDpcT8E8wc  home made metal lathe

Ray Makes
https://www.youtube.com/watch?v=GLNTnCgl7fk  HomeMade Lathe Bearings Part 3 - self aligning roller bearings https://www.youtube.com/watch?v=h7YX6HpmWq8 https://www.youtube.com/watch?v=huHqMryLCzs part 1

diy lathe2 and spindle
https://www.youtube.com/watch?v=DXAzJE9Zs8s Auto Reset / ELS Synchronizing Sys. (using 2 proximity sensors, 1 Pulse/Rev): Leadscrew starts running if chuck and leadscrew are at home position. Holes drilling division (Chuck lock): with steps of 10 degree. ronoverbeek@gmail.com. Headstock faceplate bearing adjusted with four gib screws, one each on square block, shifting the self aligning bearing.

https://www.youtube.com/watch?v=F7zaHQC9xtc lathe spindle.

blackburn tools
http://www.blackburntools.com/blog/south-bend-lathe-milling-attachment-part-iv/

4th axis
https://www.youtube.com/watch?v=e2vQokkLTiw https://www.youtube.com/watch?v=D1iBJhlcO8o Vince Build

five axis
five axis mill

DIY lathe
Dan Gilbert lathe build, usage series youtube http://www.laterallogix.co.za/index.php/projects/lathe/ Documenting youtube projects on lathe building. https://www.youtube.com/watch?v=RA3Q8d4ppQs https://desktoplathes.com https://openbuilds.com/?id=297 https://www.youtube.com/watch?v=dRIsse05l9Y two square tubes with rails on top spaced out and tacked welded with blocks in between on both ends. Welding bends metal. geniusz K diy belt sander https://www.youtube.com/watch?v=R_oexLiHSLI milling attachment https://www.youtube.com/watch?v=NHYa3WfgcPY Home made lathe part 6 by uploader Home made lathe machine. Cast iron bearings over motorcycle spoke. https://www.youtube.com/watch?v=a7lEuooQU9Y diy milling machine pt.2 (same UP) https://www.youtube.com/watch?v=e2pPkQcueCc Tracked vehicle mini dumper. (same UP) https://www.youtube.com/watch?v=lDgm_Kv_OJA inserts thrust bearing back to back for axial load into Tail stock, centered with headstock,then welded to axis slide. See channel for diy mill, drillpress, pipe bender. (same UP) https://www.youtube.com/watch?v=DBKg8_2ms90, https://www.youtube.com/watch?v=RK4gmRmuQJ8    diy mini lathe. (same UP) https://www.youtube.com/watch?v=esAqz6bCVyQ Scrape topslide to finish, tapered gib by UP Meuller nick https://www.cnccookbook.com/diy-cnc-machine-types-build/ http://www.hossmachine.info/cnc_conversion.html

mill Adam Maszynotwór
https://www.youtube.com/watch?v=uRiTLs6U2Po DIY 4th axis mill

Diy lathe
https://www.youtube.com/watch?v=LuriVr7cvYI&t=43s Home made lathe 9 parts by channel Id rather b welding Gingery lathe https://www.youtube.com/watch?v=0C_FxwKoagg DIY pipe bender, see Machine design https://www.youtube.com/watch?v=Y1IDHIcyHLY slant bed lathe, 4 axis. https://www.youtube.com/watch?v=llLWytrtJKc concrete lathe https://www.youtube.com/watch?v=55VlsZIuxTA, lathe banjo pt6 danshobbies.com https://www.youtube.com/watch?v=fet7CEJDtVA timnymmy, Making a Mini Lathe Carriage Lock out of a brass block to improve facing cuts

sa suppliers
http://uniquedesigns.co.za/page13.html

Epoxy granite
epoxy granite

lathe project
http://www.cnczone.com/forums/vertical-mill-lathe-project-log/51688-cnc-31.html http://www.model-engineer.co.uk/forums/postings.asp?th=103541 myford mill conversion

Mill millford
https://www.youtube.com/watch?v=5CzpytZd4_A Mill the groves out of support platform out of solid slab aluminum, DIY build. Large millford type mill build. Two x six centimeter metal plate welded onto large pipe. Fill pipe with concrete or epoxy concrete for vibration damping. Thirty kg of epoxy concrete is $120. modelengineercouk Thought this may be of interest to other members who might have a Myford VMB milling machine and how I converted it to CNC. The machine has developed over time. Here is its current state of play...The Blue bits are mostly the added items. https://www.youtube.com/watch?v=2wiUURbxwCA  bill t, link to Machine design factorydragon87. This mill design levers the platform, simplifying the milling head design.

Mill updyke
https://www.youtube.com/watch?v=1GKhLaHbSNY and https://hackaday.io/project/7657-cnc-mill

Mill 093 tatsu
https://www.youtube.com/watch?v=iCLz12cZbU4 How to build low cost home made CNC mill. Basically the same video of "Home made 5 axis CNC mill."

model engineer uk
http://www.model-engineer.co.uk/forums/postings.asp?th=117179 DIY lathy build

Chile lathe diy
https://www.youtube.com/watch?v=yV9ff_DAOdM From Chile large bearing 7 part series. https://www.youtube.com/watch?v=yV9ff_DAOdM prt.5 tension the AC motor with z axis(two steel tubes over each other).

Gear thread cutting
book "Gear cutting with the shaper+ by base circle https://www.youtube.com/watch?v=so4O_yxUfCE   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.

4th axis
https://www.youtube.com/watch?v=jkgmjIlOVKc making a gearbox worm for a fourth axis, oil seals.

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

Bevel blocks
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 http://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.

Sherline
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

Concrete lathe
Bolt steel diy lathe to concrete for Vibration absorption. Concrete, like cast iron functions as a mechanical low pass filter.

http://opensourcemachinetools.org/concrete-lathe/ links to http://concretelathe.wikispaces.com/Current+Design+Drawings and http://makezine.com/projects/the-multimachine-150-12-swing-metal-lathemilldrill/

Lathe brands
http://www.africamachinetools.co.za/ http://machinetoolexchange.co.za/product/dean-smith-grace-lathe/ http://qtul.com/cnc-rotary-tables/accessories/80mm-3in-chuck-with-backplate.html $120

Links
Lathe concrete https://www.youtube.com/watch?v=dHRjYQW9j5w wasteland workshop mill build using commercial xy axis https://www.youtube.com/watch?v=SdhnnC3YtG4 linear guides(no music) https://www.youtube.com/watch?v=Xfm0t0SrAWo channel  seabash 40min cnc lathe vid https://www.youtube.com/watch?v=ZwOHX3pAYyg scrap to lathe chuck 40mins, by Isle Vlogs https://www.youtube.com/watch?v=94-RQ2gXa-4 channel my chu create shared by homemadetools.net https://www.youtube.com/watch?v=isVQMHmzHNo machine thinking channel https://www.youtube.com/watch?v=Y7OT4vFevxM channel wood to wonder https://www.youtube.com/watch?v=z67A3Myy6XM channel HOMEMADE MADNESS. In this video i'm showing how i built my homemade metal cutting lathe mk2 from scratch! challenging myself by only making it with basic tools. It probably won't be the most accurate machine ever, but surely good enough for me. injection molding machine build channel Action BOX https://www.youtube.com/watch?v=LUggzM0JOlI channel 'robrenz precision tool room spindle. https://www.youtube.com/channel/UCTe6GWDa5SF_dCTqpKMsZmg andy's machines. See his Electric discharge machine build. https://www.youtube.com/watch?v=Jj6WAY0MS7o homemade lathe part 1, channel sửa chữa & chế tạo https://www.youtube.com/watch?v=FTs9GygRQ-U&list=PLDlWKv7KIIr90ZZ7Zqt-ge5nVVdS3WVgg and electronic lead screw github  by clough42 https://www.youtube.com/watch?v=4pIPrrcwM0E Maker B Four stroke engine build https://www.youtube.com/watch?v=rdkoTN094bA lathe compound adjustment modification by we can do that better channel https://www.youtube.com/watch?v=vNyrYMU_EhI micro lathe by table top machineshop https://www.youtube.com/watch?v=KX6Y-biN-2U&t=322s channel Vincebuild https://wiki.opensourceecology.org/wiki/Open_Source_Lathe Machine design