RIDGID WL1200LS1 manual Duplicate Turnings, Use of Patterns, Using a Template and a Diameter Board

Duplicate Turnings

Identical turnings require great accuracy when plotting the work and doing the vari- ous cuts. Many methods have been devised to aid in perfecting the work.

Use of Patterns

Professional workers generally use a pat- tern, or layout board. This is a thin piece of wood or cardboard on which is drawn a full- size half section of the turning. The contour of the finished surface is drawn first; then the diameters at various critical points are drawn to scale as vertical lines intersecting the contour line. By placing the pattern against the roughed-off cylin- der, you can quickly mark the various points of the critical diameters. To make each sizing cut, use outside calipers and set these by actually measuring the length of the vertical line on the pattern which represents the diameter desired. Then make the sizing cut, down to the proper diameter by using the calipers to deter- mine when the cut is finished. After mak- ing the sizing cuts, hang the pattern behind the lathe where it will serve as a guide for completion of the workpiece.

Using a Template and a Diameter Board

When many identical turnings are to be produced, it is a convenience to have a prepared template. This can be made of thin wood or cardboard - and is cut on a band saw or scroll saw to have the exact contour of the finished turning. The num- ber one finished turning can also be used as a template. Attach the template to a board; then mount the board behind the lathe, on hinges, so that the template can be moved down to touch the workpiece and allow you to closely observe progress of your work.

If a great many turnings are being pro- duced, a diameter board will save the time used for resetting calipers. This is simply a thin board along the edge of which a number of semicircular cuts have been prepared to represent all the various

Using a Template	Using a
	Diameter Board

caliper settings required for measuring the sizing cuts. Each semicircular cut is held against the workpiece instead of using the calipers.

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