Instruction/Data Sheet
In this booklet we will take an in-depth look at the
Robert Sorby
Eccentric Chuck with all its
component parts and make 4 different projects. The four projects are of varying complexity and use all
of the Eccentric Chuck’s various holding methods.
The first project will be an Off-set Stem Goblet. The second will be a 3 sided bowl with a cloverleaf
centre detail. The next will be a Cabriole Candlestick and we will finish this presentation with a
scallop lidded box.
The
Robert Sorby
Eccentric Chuck uses three methods for holding the wood.
These are :
1.
Screw chuck
2.
Faceplate
3.
Hexagonal Ball drive and socket.
The
Robert Sorby
Eccentric Chuck is the most comprehensive multi-centre chuck available.
The unique eccentric boss provides easy and accurate adjustment with its bi-heaxagonal locating
socket for each of the holding components. This allows for each component to be located at any
of the 12 positions.
The eccentric boss is marked 0-35 on its outside diameter, which can be seen through the viewing
window in the main body.
These markings are the amount the holding component held in the eccentric boss can be offset
from centre.
Zero being on the centre axis of the lathe. At this position the work piece will run concentrically to the
rotatation of the lathe.
Any number other than zero will then offset the work-piece by the amount shown in the viewing
window. The combination of the amount of offset of the eccentric boss & the position in the
bi-hexagonal socket means this is the most versatile Eccentric Chuck available.
The
Robert Sorby
Eccentric Chuck weighs around 51/2 lbs (2.5kgs). It is designed this way
to counterbalance the weight of the work piece when it is offset. This gives more stability than any
other offset system where the main components are offset from the centre as well as the work piece,
adding far more weight and creating a greater imbalance. This would substantially reduce its capability
increasing the risk of damage or injuiry.
Using and insterted adaptor system with a large variety of thread sizes the
Robert Sorby
Eccentric Chuck can be fitted to virtually any lathe in the world.
The insert, screws into the main body of the chuck and is tightened using the large wrench supplied.
The chuck can be easily mounted onto the lathe and is tightened using the wrench supplied.
The
Robert Sorby
Eccentric Chuck is also supplied with comprehensive 12 page instructional
manual. It describes the chuck and its component parts as well as instructions how to use each of the
holding methods. A CD video to accompany this booklet is also available. It shows all the procedures
described with full step by step commentry.
Page 1
Robert Sorby
Instruction/Data Sheet
ECCENTRIC CHUCK PROJECTS
