Mini Lathe Operation

This page is intended to help beginners get started using the 7x and similar lathes. I am not a professional machinist, so the techniques described may not always be the best approach.

Before you begin using the lathe for the first time, you should be familiar with the terminology and grinding cutting tools. You may choose to purchase and use pre-ground tools or to grind your own.

Table of Contents

If you have not already done so, please read the Disclaimer and Safety Tips before proceeding.

• Disclaimer
• Lathe Safety
• Facing Operations
• Drilling Operations
• Turning Operations
• Parting Operations

 

Lathe Safety

YOU are responsible for your own safety and proper machine operation.

As small as it is, the mini lathe, like any power tool, can be dangerous if used improperly. If you are new to metal working, get in the habit right from the start of rigorously following good safety practices. Here are some tips:

• Always wear eye protection – preferably industrial quality safety glasses with side-shields. The lathe can throw off sharp, hot metal chips at considerable speed as well as spin off spirals of metal that can be quite hazardous. Don’t take chances with your eyes.
• Wear short sleeve shirts, if possible, or shirts with snugly fitting cuffs if long sleeve. Loose sleeves can catch on rotating work and quickly pull your hand or arm into harm’s way.
• Wear shoes – preferably leather work shoes – to protect your feet from sharp metal chips on the shop floor and from tools and chunks of metal that may get dropped.
• Remove wrist watches, necklaces, chains and other jewelry. It’s a good idea even to remove your wedding ring since it can catch on rotating work and severely damage your ring finger and hand.
• Tie back long hair so it can’t get caught in the rotating work. Think about what happens to your face if your hair gets entangled.
• Always double check to make sure your work is securely clamped in the chuck or between centers before starting the lathe. Start the lathe at low speed and increase the speed gradually.
• Get in the habit of removing the chuck key immediately after use. Some users recommend never removing your hand from the chuck key when it is in the chuck. The chuck key can be a lethal projectile if the lathe is started with the chuck key in the chuck.
• Keep your fingers clear of the rotating work and cutting tools. This sounds obvious, but I am often tempted to break away metal spirals as they form at the cutting tool.
• Avoid reaching over the spinning chuck. For filing operations, hold the tang end of the file in your left hand so that your hand and arm are not above the spinning chuck.
• Never use a file with a bare tang – the tang could be forced back into your wrist or palm. Inexpensive wooden handles are readily available for common file sizes.
• Make sure you have an up-to-date tetanus shot. Booster shots are good for up to ten years. Working with metal on a regular basis, it is likely that you will get many small cuts and occasionally a deep cut or puncture that could put you at risk for a tetanus infection.

While actively participating in the 7×10 interest group over several years I have not heard of any serious injuries caused by the 7x lathes, but there have been a few close calls. With proper precautions and forethought you should be able to enjoy a lifetime of safe machining.