How to Set Up Your Smith Acetylene Torch: A Complete Guide

Written by Brittany Golden

Smith acetylene torch kit (with atmospheric air)

Written by Brittany Golden

When it comes to jewelry making, having the right tools is essential. One of the most important tools is your torch, and the acetylene torch is a popular choice among jewelry makers looking to purchase a torch or upgrade from a butane torch. In this post, we discuss everything you need to know about the kit.

Easy to Use

The acetylene kit is easy to use and comes with everything you need to get started, including a torch handle, #0 tip (you may also want to purchase a #1 tip), striker, regulators, and hoses. You just need to purchase the B-size acetylene tank from a local welding store.

How to Set Up Your Smith Silver Smith Acetylene Torch: A Complete Guide

Setting up your Smith Silver Smith acetylene torch is a straightforward process that shouldn't take much time at all. This guide will walk you through each step to ensure safe and proper operation of your torch, whether you're working in a jewelry studio or shop.

Initial Tank Inspection

Before beginning the setup process, it's crucial to thoroughly inspect your acetylene tank. Most jewelry studios use a B-size tank, which is the standard size for this type of work.

Key inspection points:

Remove the red cap that indicates the tank is filled
Check the outlet threads for dents, clogs, or damage that could cause leaks
Inspect the inside of the valve for dirt or debris
Clean out any accumulated material in the valve or on the threads using a paper towel (avoid forcing anything into the valve)
Blow off any paper towel fuzzies if necessary

Important Note: Even small debris like a black speck inside the valve can prevent proper sealing and cause dangerous leaks.

Installing the Regulator

Your kit includes a regulator that must be properly installed with the pressure release valve.

Installation steps:

Thread the regulator onto the tank outlet using standard right-hand threads (righty-tighty)
Hand-tighten as much as possible
Use a crescent wrench (smooth jaws) for final tightening if needed, but avoid over-tightening
Make it snug but not extremely tight to prevent thread damage

Important Note: Each tank may be slightly different - some regulators install easily while others require more effort. Don't force any joint to tighten; it could cross-thread and permanently damage your threads and could cause a gas leak.

Connecting the Hose and Handle

The hose connection uses reverse threading, which is critical to remember for safety.

Connection process:

Connect the hose to the regulator using the notched nuts
Use reverse threading (lefty-tighty) - opposite of normal threading
Hand-tighten first, then use wrenches if necessary
Connect the handle using the same reverse-thread process
Keep all connections snug but not over-tightened

Attaching the Tips

The torch tips are designed for easy attachment and removal.

Attachment steps:

Inspect the black O-rings on the tips for damage or wear
First, insert the tip firmly into the handle fully (you'll need to "pop" it in)
Hand-tighten the connection nut

Important Note: O-rings can wear out over time and should be replaced when damaged to prevent leaks.

Pressurizing and Testing the System

This is one of the most critical steps for safe operation.

Pressurization process:

Ensure the pressure release valve is backed out and loose before opening the tank
Make sure the handle is turned off (righty-tighty)
Open the tank valve a quarter turn (counterclockwise)
Check the gas gauge to confirm gas is in the system (right regulator)
Set the pressure to 12-14 pounds using the pressure release valve (left regulator)
The red numbers on the pressure gauge should indicate proper pressure (left regulator)
Optimal Operating Pressure: 12-14 pounds of pressure provides the best performance for the torch tips.

Leak Testing - Critical Safety Step

Never skip this step, especially with older tanks and torches that have been in use for a while.

Testing procedure:

Apply leak detection soap (soapy water) to every threaded connection, including the tank connections
Check the regulator connection to the tank
Test the hose connections
Inspect the handle connections (except the tip connection - you don't want to get soap in the air holes)
As you go along, look for any air bubbles forming, which indicate leaks. Tighten the joint immediately

Safety Note: Leaks at the tank connection are particularly common and dangerous.

Lighting and Operating the Torch

Once all connections are tested and secure:

Light the torch according to standard procedures
Maintain proper pressure throughout use
The system does not require a flashback arrester, though one can be added if desired

Proper Shutdown Procedure

Following the correct shutdown sequence (when leaving the torch for the day) is essential for safety and equipment longevity.

Daily shutdown steps:

Turn off the torch first
Close the tank valve completely and snug it up
Bleed the line by removing the tip and opening the torch valve or lighting the torch and letting it burn out
Watch both gauges drop to zero pressure
Replace the tip for next-day readiness
Back out the pressure release valve completely as a safety precaution

Important Safety Note: Always ensure the pressure release valve is backed out and loose before the next use.

Key Safety Reminders

Pressure Settings: Always operate at 12-14 pounds of pressure
Leak Testing: Test every connection every time you swap out the tank
Proper Threading: Remember reverse threads on hose connections
Complete Shutdown: Always bleed the system when finished
Regular Inspection: Check O-rings and connections regularly for wear

Troubleshooting Tips

If the regulators don't install easily, don't force it - each tank is different, and the threads may need to be cleaned, or the tank may need to be swapped out at the welding store for one with better threads (rare case, but it can happen)
Clean valve interiors regularly to prevent sealing issues
Replace worn O-rings promptly to maintain safe operation
If you detect any leaks during testing, address them immediately before use. Snug down the joint until the bubbling of the leak detection fluid stops

Following these steps will ensure the safe, reliable operation of your Smith Silver Smith acetylene torch. Remember that proper setup and maintenance are crucial for both safety and optimal performance in your jewelry work.

Studio Safety

Secure the tank to the leg of your bench or table so it doesn't get bumped and fall over. Do not secure the tank by the top stem; around the main part of the body is sufficient.

Conclusion

Overall, the acetylene kit without tank from B Golden Jewelry School is a great option for jewelers looking for a compact and versatile torch. Its ease of use and versatility make it a great option for both beginners and experienced jewelers. Whether you're just starting out with jewelry making or you're looking to upgrade your tools, the acetylene kit is definitely worth considering.