Metalworking - Mini Lathe Users Guide.pdf - METAL - lapistolla

The premier source of parts and accessories for mini lathes and mini mills.

Mini Lathe User’s Guide

from LittleMachineShop.com

Frank J. Hoose Jr. of Mini-Lathe.com took many of the photographs in this

document. Be sure to visit the Mini-Lathe.com Web site, which has a wealth of

information about the mini lathe.

LittleMachineShop.com

http://www.littlemachineshop.com

221 E. Walnut St. #110, Pasadena, CA 91101

(800) 981-9663 • Fax (626) 584-5844

Contents

Introduction................................................................................ 5

Specifications.............................................................................. 5

Safety Considerations .................................................................... 5

Features .................................................................................... 6

Front View............................................................................... 6

Rear View................................................................................ 7

Basic Accessories.......................................................................... 7

Cleaning .................................................................................... 7

Mounting Your Lathe...................................................................... 7

Operating Controls........................................................................ 8

Motor Controls .......................................................................... 8

High/Low Speed Shifter ............................................................... 9

Power Feed Forward/Neutral/Reverse Lever ..................................... 10

Power Feed Lever ..................................................................... 10

Carriage Hand Wheel ................................................................. 10

Cross Slide Feed Handle .............................................................. 10

Compound Rest Feed Handle ........................................................ 11

Compound Rest Rotation ............................................................. 11

Tailstock Lock Nut .................................................................... 11

Tailstock Quill Hand Wheel .......................................................... 11

Tailstock Quill Locking Lever ........................................................ 11

Adjustments .............................................................................. 12

Carriage................................................................................. 12

Cross Slide Gibs........................................................................ 12

Cross Slide Nut......................................................................... 13

Compound Rest Gibs .................................................................. 13

Apron Position ......................................................................... 13

Half Nuts................................................................................ 14

Lead Screw Mounting ................................................................. 14

Drive Belt............................................................................... 14

Lubrication................................................................................ 15

Lubricating the Transmission Gears ................................................ 17

Changing Chuck Jaws.................................................................... 17

Grinding Tool Bits ........................................................................ 18

Grinding Tool Bits ..................................................................... 20

Grind the Front Relief ................................................................ 20

Grind the Left Side Relief............................................................ 20

Grind the Top Rake ................................................................... 20

Round the Nose ........................................................................ 20

Adjusting Tool Bit Height ............................................................... 20

Turning .................................................................................... 21

Manual Turning ........................................................................ 21

Turning with Power Feed ............................................................ 22

Facing...................................................................................... 22

Turning Angles............................................................................ 23

Threading ................................................................................. 24

Change Gears .......................................................................... 24

Threading Dial ......................................................................... 27

Tool Bit ................................................................................. 28

Compound Angle....................................................................... 28

Setting the Cutting Tool.............................................................. 29

Threading Process ..................................................................... 30

Common Accessories .................................................................... 30

Cut-Off Tool Holder ................................................................... 30

Quick Change Tool Post .............................................................. 31

Indexable Turning Tools .............................................................. 32

4-Jaw Chuck............................................................................ 32

Faceplate ............................................................................... 33

Centers and Dogs ...................................................................... 33

Steady Rest and Follower Rest ...................................................... 34

Maintenance .............................................................................. 34

Cleaning ................................................................................ 35

Motor Brushes.......................................................................... 35

Introduction

This user’s guide covers the 7x10 and 7x12 mini lathes that are sold by

Grizzly Industrial, Harbor Freight Tools, Homier Mobile Merchants, Micro-Mark,

Northern Tool & Equipment, Enco, and Wholesale Tool.

These lathes are made in China, in several different factories, but to a similar

set of plans. The general operating principles covered in this document are

common to all of them.

Specifications

The following specifications are common to these lathes.

Metric Lathes

Inch Lathes

Swing over bed

180 mm

7”

Between Centers

200 mm / 300 mm

7.9” / 11.8”

Spindle Taper

3 Morse taper

Tailstock taper

2 Morse taper

Spindle Bore

20 mm

0.79”

Cross Slide Travel

65 mm

2.56”

Compound Rest Travel

55 mm

2.17”

Spindle Speed

100–2500 RPM

Automatic Feed Rate

0.1 mm / Revolution

0.004”/ Revolution

Screw Threads

0.4–2.0 mm in 10 steps 12–52 TPI in 18 steps

Safety Considerations

Always use common sense when using a power tool. Review the safety

instructions that came with your lathe. Besides the general safety rules for any

power tool, the following are specific considerations for the mini lathe.

•

Your mini lathe is just that, a mini , or small lathe. Don’t attempt jobs that

are beyond its capacity.

•

Check the work piece after you place it in the chuck or other work holding

device. Be sure it is secure before turning on the lathe.

•

Don’t wear loose clothing or jewelry when operating the lathe.

Metalworking - Mini Lathe Users Guide.pdf

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