26 Mar. 1980|
Wood lathe chuck types,wood childrens toy chest plan,dying wood white - Review
The Longworth chuck was developed in the late 1980’s by Leslie Douglas Longworth of the Hunter Valley Woodturners in Australia. I started with two plywood disks sized to the maximum over bed turning capacity of my lathe. Once the faceplate is attached to the disks put it on your lathe and turn the disks perfectly round, removing as little wood as possible to maximize the size of the chuck. Because of the size and weight of the chuck, and also because I am just using it to finish off a bottom of a piece I usually use it with a speed of between 500 and 600 rpms, though I have had it as high as 750 rpms.
Also, the April 2010 issue of Woodturning magazine has an excellent tutorial which I followed pretty much verbatim. If you want to use MDF for the flatness, try gluing a piece of thin BB ply to it to keep it from disintegrating at higher lathe speeds. When first introduced, four-jaw chucks were viewed by many as a luxury just for professional turners.
With prices ranging from about $35 up to $280, you're probably asking yourself why you should buy a four-jaw chuck for your lathe.
I need a 4jaw chuck for a Sears Craftsman wood lathe model# 351.217150 where can I find one. The faceplate will be permanent so you need to get one specifically for the Longworth chuck. I spent over 2 hours on my metal lathe turning them from bolts however they are a perfect fit. Very good article by the way, a little hidden gem in the midst of a google search for ‘homemade chuck’! Better yet, if you turn a tenon on the faceplate you could simply chuck it instead of threading it on to the lathe’s spindle. Then I tighten the wing-nuts and follow this up with more tightening using a wrench when the chuck is mounted on the lathe.
As for square pieces of wood, although i never tried it i would say yeas, as long as you can get it centered properly. However, one thing to keep in mind is that these types of chucks are primarily used to finish the bottom of a project and not for any heavy turning. A fellow turning club member is wanting to get together with me to build a couple Longworth chucks so maybe we’ll find some suitably flat material.