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Tool and Die Makers
All questions concerning tool makers, die makers, mold makers and tool fitters and the work they do including the tools and equipment they use (machines such as lathes, mills, shapers, grinders, saws), as well as the necessary education and training to become one can be found here.
388 Questions
Does anyone have a used hapfo copy lathe?
Hi,
I have a Hapfo AP8000 copy lathe that is for sale, no decent offer will be refused, it has all the required attachments inc. Knife sharpening machine, milling unit, router, chuck etc
Contact me
carlos_collins2003@yahoo.co.uk
Can you remelt plastic bottles for later casting and turning in a lathe?
try it and find out if you can remelt plastic bottles..
What is the life span of lathe and plaster?
Lathe and plaster can and does last in excess of 100 years if the building in maintained in a damp free environment. Most houses in the Eurpoean areas including UK and Ireland have used lathe and plaster since early 1800 and pre this and many of the houses that have these features still have existing wall finishes
On a lathe How should the tool rest be adjusted for spindle turning?
You can use different heights with different tools, Myself when spindle turning I put the steady rest a little below center, (1/16" to 1/4"depending) [I will caution you not to be confused by the variation in the information below, you will have to find a middle ground and find what works for you] I will provide you with a excerpt and sites to help explain futher:
The key to the roundnose scraper is to lower the tool rest and lock it in place so the cutting edge of the scraper is precisely at centerline. The roundnose scraper is like a steel cliff. The overhanging cutting edge is always on top. I like to use this scraper to cut uniform coves.
By the way, the roughing gouge is only used for spindle turning. It is too grabby for bowl or faceplate work.
So what are these five wonder tools? If you become handy with these chisels, you'll be a master in no time. They are (from left to right above) the 3/16" diamond parting tool (the cross section of the blade is diamond shaped), the 1-1/4" roughing gouge, the 1/2" bowl gouge (perhaps the most important), the 1" oval skew (its edges are rounded for easier use), and the 1/2" roundnose scraper.
* http://www.popularwoodworking.com/article/Lathe_Turnings_Fab_51/Another site:
* http://www.lincoln.k12.or.us/Files/Wood%20Lathe%20Operation%20and%20Safety.pdfAdjusting the tool rest
Horizontally the tool rest should be set about 1/8" from the farthest projecting corner of the wood and should be readjusted occasionally as
the stock diminishes in size. The vertical height varies slightly according to the height of the operator. It is even with the center of
the spindle for a short person; 1/8" above for a medium person; and 1/4" above for a tall person. So long as the stock is in its square form the
tool rest should never be adjusted while the machine is in motion as there is danger of the rest catching the corners and throwing the stock
from the machine. Also see that everything is clamped tight before starting the lathe.
* http://woodturningguide.blogspot.com/2006/11/centering-stock-in-spindle-turning.html
Up to what tolerance is achievable on a lathe?
Machinists can accomplish very fine tolerances on lathes, usually up to one tenth of a millimeter (0.01mm) or thousandth of an inch (0.0001in). By using a light sandpaper a much closer tolerance can sometimes be achieved.
lathe machine, power depends on the size and power of electric motor and gearbox lathe.
Describe how to align the center lathe machine by using trial and error method?
After each stage shaving his head and the bottom of the students' revolt as much as we take this difference of shaving error to show us.
What is a lathe chuck and what are the types of chuck?
A lathe chuck is a device on the driven spindle on the head (headstock) of the machine that holds the workpiece. It grips and spins it. The chuck has "fingers" called jaws that "pinch" the workpiece between them to secure it. Chucks can be 2-, 3- , 4-jaw or more. And the chuck can be self-centering or of the independent type. The self-centering chuck will have a "scroll" of threads behind the jaws that engages them. The scroll is the screw that will close each of the jaws on the workpiece (simultaneously) with the use of a tool to tighten it. And this chuck will automatically center the workpiece in the chuck. Independent chucks will have jaws that must have a tool used on each of them independently to tighten them. And of course, the workpiece will have to be "fooled around with" until it is centered in the jaws. Workholding is a company that sells chucks and has an article with pictures. A link is provided to the site. Additional links are provided to other images. Be sure to at least look at the "6-jaw chuck taken apart" to see the scroll gear that simultaneously closes the jaws. Look closely. The shiney "circles" are not circles at all but are the gradually shaped spiral of the scroll.
The only sure method is to have the appropriate internal (female) thread eg. a nut available and to try this on the cut thread. If the fit is too tight then another cut or pass must be made on the lathe. If you are cutting both male and female threads to match then cut the female thread first and use it to check the cutting of the male thread. Submitted by Bill Lavery
When Pig Iron is melted and recooled it is called Cast Iron
