Machining square corners, Finishing and polishing – Smithy Midas 1220 LTD User Manual

Page 57

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Figure 11.2 You can do other turning cuts with different cutter bits and cutting tools.

Machining Square Corners

To machine an accurate corner, follow these steps:

1.

Set the compound rest perpendicular to the line of the centers and insert a right or

left-hand corner tool.

2.

Using the longitudinal feed, turn a small diameter to finish up to the shoulder.

3.

With the compound rest, feed the tool the amount needed to finish the work to the

length, taking the last facing cut across the shoulder away from the center.

Finishing and Polishing

After machining, you'll want a smooth, polished surface free of machine marks. You'll

obtain the best results with a toolpost grinder. If you don't have one, use a file.

With a file, take full, biting strokes across the revolving workpiece at a slightly oblique

angle. Do not drag the file back across the work-piece; instead, lift it clear for each return

11: Lathe Turning

11-3

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Left Hand

Turning

Left Hand

Facing

Finishing Cut

Right Hand

Facing

Left Hand

Corner

Parting or

cutting off

Special-form cutter

Right Hand

Corner

Turning with a roundnose cutter

Right Hand

Turning

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