Lathe Safety

SJHS Woodworking

12 Nov 201602:51

Summary

TLDRThis video script offers essential safety and operational guidelines for using a lathe. It emphasizes the prohibition of loose clothing and jewelry, the importance of proper workpiece preparation, and the correct positioning of tools and equipment. The script also covers the process of centering workpieces, adjusting the tool rest, and conducting a safety check before operation. It advises on the use of appropriate speeds for different diameters and the importance of maintaining sharp tools, while also highlighting the use of outside calipers for measurement.

Takeaways

👕 Never wear loose clothing, neckties, watches, rings, or jewelry while operating a lathe to prevent accidents.
📐 Keep sleeves rolled to the elbow as a safety requirement when working on the lathe.
🚫 Do not turn on the lathe any wood pieces with splits or checks found in the work stock.
⏱ Ensure that glued wood pieces are cured for at least 24 hours before turning on the lathe.
📏 Use diagonals to check if the work is centered on the lathe axis when turning between centers.
🔧 Set the table sauce to 45 degrees and cut off the corners at the 45-degree line with the help of an instructor.
🔒 Secure the tailstock into the blank and lock it down before turning the cylinder to press into the spur center.
🔨 The tool rest height should be the thickness of the tool to the cutting edge, just below the center line of the work.
📍 The tool rest should be positioned as close to the work as possible without making contact.
👋 Perform a safety check by turning the blank by hand to ensure it won't strike the tool rest before rough cutting.
🛠️ Remove the Torah when sanding on the lathe and always use a very slow speed for rough turning, especially for larger diameters.
⛔ Do not use dull tools on the lathe; consult the instructor before sharpening on a grinder.
🔒 Double-check that the tailstock, the cylinder, and the tool rest locks are tight before operating the lathe.
📐 Use outside calipers to measure the diameter of your work while it is on the lathe for accuracy.

Q & A

What type of clothing should be avoided when operating a lathe?
-Loose clothing, neckties, watches, rings, or any jewelry should never be worn when operating a lathe.
What is the requirement for sleeves when working on a lathe?
-Sleeves should be rolled to the elbow while working on the lathe.
Why should stock with splits or checks not be turned on the lathe?
-Stock with splits or checks should not be turned on the lathe as it may lead to unsafe conditions or damage to the workpiece.
What is the minimum curing time for glued wood pieces before turning on the lathe?
-Glued wood pieces must cure for at least 24 hours before being turned on the lathe.
Why is it necessary to draw diagonals on each end of the workpiece when turning between centers?
-Drawing diagonals helps ensure that the work is centered on the lathe axis, which is crucial for accurate turning.
What angle should the table sauce be set at and why?
-The table sauce should be set at a 45-degree angle to facilitate the cutting off of corners at the 45-degree line with the help of an instructor.
How do you ensure the blank presses into the first center and the live center?
-Move the tailstock into the blank, lock it down, turn the cylinder so the blank presses into the spur center, and then lock the cylinder.
What is the recommended height of the tool rest in relation to the work?
-The tool rest height should be the thickness of the tool to the cutting edge, positioned just below the center line of the work.
What is the proper location of the tool rest in relation to the work while turning?
-The tool rest should be positioned as close as possible to the work without hitting it.
What safety check must be performed before rough cutting on the lathe?
-Turn the blank by hand to ensure it will not strike the tool rest during rough cutting.
What should be done with the tailstock when sanding on the lathe?
-The tailstock must be removed before sanding on the lathe.
What is the recommended speed for rough turning larger diameters on the lathe?
-Use a very slow speed for rough turning larger diameters to ensure safety and control.
What should be done if a tool appears dull during lathe operation?
-If a tool seems dull, do not sharpen it on the grinder without first consulting the instructor.
What is a good practice to follow before turning on the lathe?
-Double-check that the tailstock, the cylinder, and the tool rest locks are tight before turning on the lathe.
What is the proper tool to measure the diameter of work on the lathe?
-The outside caliper is the proper tool to measure the diameter of work while it is on the lathe.

Outlines

00:00

🔧 Safety and Setup for Lathe Operation

This paragraph emphasizes the importance of safety precautions when operating a lathe. It advises against wearing loose clothing, neckties, watches, rings, or jewelry to prevent accidents. It also details the requirement to roll up sleeves to the elbow and the prohibition of using the lathe on wood pieces with splits or checks, as well as glued pieces until they have cured for at least 24 hours. The paragraph further instructs on centering the work on the lathe axis by drawing diagonals and using both the first center and live center, with a specific focus on the process of setting the table sauce to 45 degrees and cutting off corners along this line. Additionally, it mentions the importance of ensuring the blank is properly pressed into both centers and the tailstock is securely locked before operation.

Mindmap

Keywords

💡lathe

A lathe is a machine tool used for shaping various materials, typically metal, by rotating the workpiece and applying cutting tools to it. In the video script, the lathe is central to the theme, as it is the primary tool being operated, and safety precautions, operational procedures, and techniques are discussed in relation to it.

💡safety

Safety is a critical aspect of operating machinery like a lathe. The script emphasizes the importance of not wearing loose clothing or jewelry to prevent accidents. It is directly related to the video's theme of proper lathe operation and is highlighted through the various precautions mentioned.

💡sleeves

In the context of the video, 'sleeves' refers to the requirement of rolling them up to the elbow when working on a lathe to prevent them from getting caught in the machine, which is a specific safety measure mentioned in the script.

💡work stock

Work stock, or workpiece, is the material being shaped on the lathe. The script mentions checking for splits or checks in the work stock before turning it on the lathe, indicating the importance of workpiece condition in the lathe operation process.

💡glued pieces

Glued pieces refer to wooden workpieces that have been joined with adhesive. The script specifies that these must cure for at least 24 hours before being turned on the lathe, showing an important step in the preparation of certain materials for lathe work.

💡centers

Centers are points on the lathe that support the workpiece and determine its rotational axis. The script describes turning between centers and ensuring the work is centered, which is crucial for accurate and safe lathe operation.

💡table sauce

Table sauce, likely a misspelling or misreading of 'table saw,' refers to the angle at which the workpiece is positioned on the lathe. The script mentions setting it to 45 degrees, which is part of the process of preparing the workpiece for turning.

💡tailstock

The tailstock is a part of the lathe that supports the workpiece from the opposite end of the lathe bed. The script describes moving and locking the tailstock to secure the workpiece, which is essential for stable and safe operation.

💡tool rest

A tool rest is a support that holds the cutting tool in place while it is in use on the lathe. The script provides instructions on adjusting the height and position of the tool rest in relation to the work, which is vital for the accuracy and safety of the cutting process.

💡rough cutting

Rough cutting is the initial phase of shaping the workpiece on the lathe, where a significant amount of material is removed to achieve the desired shape. The script mentions performing a safety check by turning the blank by hand before rough cutting, which is an important step in the lathe operation process.

💡outside caliper

An outside caliper is a measuring tool used to measure the external diameter of an object. The script specifies that it is the proper tool to measure the diameter of work on the lathe, indicating its importance in ensuring the accuracy of the workpiece dimensions.

Highlights

Never wear loose clothing, neckties, watches, rings, or jewelry when operating the lathe.

Keep sleeves rolled to the elbow while working on the lathe.

Do not turn on the lathe if splits or checks are found in the work stock.

Wood pieces that have been glued must cure for at least 24 hours before turning on the lathe.

Ensure the work is centered on the lathe axis by drawing diagonals corner to corner.

Set the table sauce to 45 degrees and cut off the corners at the 45-degree line with the instructor's assistance.

Press the blank into the first center and the live center by moving the tailstock into the blank.

Lock down the tailstock and turn the cylinder so the blank presses into the spur center.

Adjust the tool rest height to be the thickness of your tool to the cutting edge below the center line.

Position the tool rest as close as possible to the work without hitting it.

Perform a safety check by turning the blank by hand to ensure it won't strike the tool rest.

Remove the tool post when sanding on the lathe.

Use a very slow speed when rough turning, especially for larger diameters.

Dull tools are not acceptable; consult the instructor before sharpening on the grinder.

Double-check that the tailstock, cylinder, and tool rest locks are tight before turning on the lathe.

Use an outside caliper to measure the diameter of your work while it is on the lathe.