View Full Version : finished project (pic)
11-17-2005, 08:48 PM
heres a couple of pictures of the ball turning tool i have just recently finished,,
11-17-2005, 09:10 PM
Nice job ..lovely work.......but I cant see what does what ...what turns and what doesnt etc.
Any chance of you showing the plans for this .
How about some pics of some sub assemblies so that I can get the just of it.
then I might even attempt to make it myself.
all the best....mark
11-17-2005, 09:38 PM
hi mark, the design is pretty simple, the front two blocks slide up/down under an M6x50mm long bolt, it will cut ball/acorn shapes, and can also be adapted to be a boring tool, the square part in the centre fits into a tool post, im sorry but this tool was copied from another ball turning tool so no drawings are available, this one has been modified further with bronze bushes and the dovetail slides have had a gib strip fitted for extra rigidity, will cut balls from 1/16"th to 2", ill break the tool down into parts so you can get a better idea for construction,,the front blocks are made from ground stock(30x25mm) and mild steel axle, with a 5mm diam drill rod for a cutter, ground at 25 degrees, the main tool holder bit is made from solid aluminium stock 2"x1" then bored out to 18mm to accept the axle, hope this helps,,
(ill post some exploded view photos)
11-17-2005, 10:03 PM
hi, heres the tool broken down into individual parts, the overall length of the tool is 8 inches.
11-17-2005, 10:31 PM
Spare us the pictures of you turning your balls though. I don't think I want to see that. http://bbs.homeshopmachinist.net//biggrin.gif
What's the max radius?
11-17-2005, 10:53 PM
hi,,im glad i aint got brass balls ,,its well below zero in england east coast tonight,, max rad is 1" or 2" diam
11-17-2005, 11:25 PM
bill...looks real good.... i too would like to make one like that. if i had plans (hint)
Bloody hell that's complicated. Must be an English design. http://bbs.homeshopmachinist.net//biggrin.gif Looks nice though. I just swivel the compound on my SB9.
11-18-2005, 02:58 AM
Sorry, not English but Kiwi stuff!
All in Jack Radford's book but thence on to Geo H Thomas and then on to Hemingway.
The design lends itself to a rather nice small boring head- with a shank to fit lathe or miller. See Model Engineers Workshop Manual by GHT.
Don't glue the spigot in- Billy Boy!
Use it for both jobs. Congrats- and where the Hell are this time?
11-18-2005, 08:08 AM
Nice job on the radius turner.
11-18-2005, 08:59 AM
Nice job!! Thats a pretty ambitious project.
11-18-2005, 09:03 AM
hi, if anyone is interested in making this tool the plans and kits are available from www.hemingwaykits.com (http://www.hemingwaykits.com) for £42.00, im not sure if they ship to the U.S but if you email them they are very helpfull and they really are nice people to talk to, although this particular tool is not made from a kit or plans. Norman, im going to make mt2 and a mt3 shafts to fit directly onto the head as to fit my machinery, the axle thread into the head is an m14 so can be removed as and when i need to, as ive never done any thread cutting on a lathe before i was going to use a largish tap and die for the rear thread, ive read a lot about threading and got to work on a 30 tpi thread on the axle, it worked out fine first time, the threads are a nice snug fit.
[This message has been edited by billyboy (edited 11-18-2005).]
11-18-2005, 09:12 AM
That's really nice. Can you post a picture of it mounted on the lathe?
11-18-2005, 09:39 AM
here you are roger, mounted on the lathe.
11-18-2005, 09:52 AM
great job, like the pics showing it on the lathe - now i get it http://bbs.homeshopmachinist.net//biggrin.gif basically made yourself a boring head, nice project
11-18-2005, 10:21 AM
Thanks, that really helps me understand how it works.