“Glass blowing” offered to be excellent by structure a furnace and heating logs come melt the glass. The advance of blow torches has actually made glass punch easier and less time-consuming. However are propane torches efficient for glass blowing? below is what we’ve found.

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Propane torches are commonly used to blow glass. However, propane is no the only element needed because that the torch to blow glass effectively. To melt glass, the flame must be in ~ a specific temperature, so a pre-mix torch comprise propane and oxygen is necessary for the best effect. 

Keep reading to find out just how the propane torches work, safety tips to take into consideration when glass blowing, and how to use different species of glass to produce beautiful glass art.


How walk the propane torch work-related to blow glass?

The flame must be at a specific temperature certain to the type of glass you are using to melt and also shape it. To develop a flame, you need fuel, which in this case, is the propane, yet the flame demands exposure to air to with the suitable temperature forced for glass blowing.

Compressed air won’t enable the fire to reach the needed temperature, for this reason oxygen is used due to the fact that it is the only gas that will make the flame hot enough to melt and shape the glass. Oxygen is corrosive, so that is important to ensure the you usage the proper type of propane torch.

A pre-mix torch is the finest kind of torch to use for most species of glass blowing. This is because pre-mix torches can create a concentrated flame that have the right to burn hot than other flame torches. A pre-mix torch is one where propane and oxygen are blended inside a chamber in ~ the torch. 

A common glass blow torch is hand-held. The glass you are working through is organized stationary top top the workstation through clamps, and also the torch is carried to the glass. Part torches are associated via a hose to an air cylinder, while others have an wait cylinder directly associated to the torch.


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Types that Torch Tips

There space interchangeable advice that deserve to be offered for her torch to manage the size and also temperature of the flame. The tips space usually numbered and can it is in purchased with some torches as a kit or purchase separately. The tips work-related by managing the quantity of oxygen that is allowed to mix through the flame. Three common flame varieties are:

The oxidizing flame- one intense, high-oxygen flame offered for heater small, focused areas.The neutral flame- a versatile, balanced flame provided for many purposes.The reducing flame- a soft, low-oxygen flame provided for preheating the glass.


Check out this torch deserve to be purchased with the tips.

What types of blown glass have the right to you produce with a propane torch?

There are countless possibilities for the varieties of swollen glass that can be created with a propane torch, but before we dive into what you deserve to create, we must look in ~ the types of glass offered for glass blowing.

Types that Glass

Lead Crystal and also Soda-Lime

Lead crystal and also soda-lime glass space the 2 most generally used types of glass for glass blowing. These room “soft” glasses and also are an extremely malleable and easy come shape as soon as melted. Lock are used by heater the glass v a torch and also blowing through a pipe to develop round glass ornaments.


Borosilicate Glass

Borosilicate glass is a form of “hard” glass, which way that that requires greater temperatures to shape and also form, so the is most commonly used v a torch with high-temperature flame in a glass blowing an approach called lampworking. This technique is supplied for an ext creating much more intricate glasswork such as glass beads or figurines.

Glass blowing Safety

Before you start glass blowing, there are many safety risks you must be conscious of, indigenous respiratory dangers to cuts and burns come high level of heat. Below are some security precautions you have to take to prevent putting yourself at risk.

Respiratory risks that might arise from glass blowing encompass inhaling fumes or particulates that various kinds the glass might emit while being heated. To minimization the respiratory risks, make certain you are glass blowing in a well-ventilated area. Examples of a well-ventilated area incorporate a workspace v a window at each end and exhaust pan to suck the end the air through fumes or particulates. Attract a respirator can also aid reduce risks.

When utilizing a high-temperature propane torch, burns have the right to occur. First, second, and third-degree burns space possible, and burns can cause skin reddening, blisters, and also shock. Third-degree burns generally only take place when a glassblower picks up or brushes against a hot piece, but they can happen.

Glass likewise contains sharp edges once it is cooled. The best way to safeguard yourself indigenous cuts and burns is to wear gloves. Padded welder’s gloves room a good choice, but they should be replaced frequently because of the high temperatures. Kevlar gloves are a good choice because that minimizing the danger of gift cut.


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How execute you blow glass v a propane torch?

Blowing glass with a torch is a distinct process. To do it much easier to follow, we will break that down right into smaller segments.

Melting the Glass


Ignite the fire on her torch and also position the fire so that the blue section is poignant the glass.Move the flame throughout the glass. Be certain that her strokes are continuous so the the warm is distributed evenly.Heat the glass till it starts to glow slightly orange (usually about 5 minutes). The glass will start to melt.

Shaping the Glass


The way you shape glass counts on what you space trying come make. Listed below are the procedures to create a glass ornament using a torch, a glass pipe, and a punch tube.

Light her torch and collection it top top a table.Heat the glass tube by adhering to the steps over until the glass begins to melt.Blow a couple of small puffs the air right into the blow tube. The air will certainly travel v the tube and into the molten glass.Be sure to continually turn the molten glass to maintain the circumference of the ornament every the means around while maintaining the pipe focused in the glass.Continue to heat the glass and also blow right into the tube till your ornament is as big as you want it to be.

You have the right to create an ext intricate glass pieces through a propane torch making use of borosilicate glass. This entails fusing pieces of glass and also shaping them through tweezers. Clock this video clip to learn exactly how to create a glass sculpture of a horse.

Cooling and also Finishing the Glass

To cool the glass, you will have to separate the hot glass from the punch tube. Friend will require to warmth the area wherein the glass is attached to the tube.


After the glass has actually melted, usage steel tweezers to closely cut the glass away from the tube and also pull the puffy glass off. You may need to tap the tube as soon as to eliminate the glass entirely. Tapping much more than once can reason the glass come break.Wearing warmth resistant gloves, deliver the blown glass right into a special kiln dubbed an annealing oven. The oven should be kept at 960° F. To save the glass native cracking, cool it down to room temperature end 14 hours.After the glass has cooled come room temperature, inspect for spicy edges. Usage a grinding block to remove any type of sharp edges the you discover carefully.

How hot is a propane flame?

The flame needs to be at the very least 1000 levels Fahrenheit to affect the glass in ~ all. “Soft” glass begins to soften between 1,175° F and 1,250° F. Borosilicate glass begins to soften at 1,508° F. Propane torches the are sustained by oxygen can have a flame temperature that reaches as much as 4,600° F, v the flame gift the hottest in ~ the guideline of the center flame.

Can you blow glass through a butane torch?

Butane torches have the right to be used for blow glass, but they are best suited for soft glass since they nothing reach a high enough temperature for melt borosilicate glass. The maximum temperature that a butane fire is 2,400° F, therefore if you desire to job-related with borosilicate glass, climate a propane torch is the finest option.

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Bottom line: propane torches make glass blowing easier!

Thanks come propane torches, we’ve come a long method from having to develop a heating system to create things the end of glass. Propane torches have absolutely made glass blowing easier and less time-consuming. Be certain to use the proper form of torch and also follow all of the safety precautions so the you deserve to have a successful glass blow hobby or career.