Which Flash Unit Benefits My Shop?  | Screenprinting.com

Every shop needs a flash unit. They’re a useful tool — flashing or gelling ink, curing ink and warming up that grilled cheese you’ve been looking forward to eating for lunch. A flash dryer isn’t a one-size-fits-all piece of equipment, though. Depending on the size and needs of your shop and plug type, you’ll look for different features in a flash dryer. Do you print large prints? Do you want to print water-based ink? These questions are important when considering which flash unit to purchase. Let’s talk about the differences between the four flash units, and how each serves a different shop.

A flash unit sits above a press


The flash unit you get depends on the voltage and amp of your plug. The average residential house can handle 120 volts and 15 amps. If you’re printing out of a room in your house, you’ll need to make sure that you get a flash dryer with the correct plug. If you’re not sure about the plugs in your house, check with your electrician.

One way to get around this is to run an extension cord from a higher-voltage outlet to the room you’re printing and flashing out of. This isn’t always a perfect solution. You might not have an extension cord long enough or might not have a higher voltage plug in your garage or shop. 

Don’t get an adapter for your plug. It might seem like this will work, but you can melt the plug or even start a fire. Make sure that the flash dryer you’re using works with the plug type you have available. 


Printing block letters, left chest prints, or 8” back designs? For printers learning the ropes of screen printing, check out the RileyFlash 16”X16” flash dryer. 

This little flash is the perfect starter flash for printers learning the ropes of screen printing. It’s got a 10-foot power cord, wheels, and casters, so you can move it around your shop to establish the best flow for you. This flash unit warms up in about 10-15 minutes. While it doesn’t have an indicator light or an on/off switch, you can tell if it’s on or off by feeling if heat is emitting from the flash. You can always use a heavy-duty power strip as an on/off switch.

Plastisol ink is a great ink for novice printers to start with. It’s vibrant and doesn’t dry in the screen, so you can test, check your results, and go back to the screen without worrying about removing the ink in between. The 16”x16” flash unit works best with plastisol ink. It’s the perfect flashing and curing device for printers learning the ropes. 

a flash dryer and a press sitting together


Printing larger plastisol designs? Let’s look at the RileyFlash 18”x18” flash unit.


An 18’X18” flash unit has a larger surface area, so you can gel or cure larger prints than you could with the 16”X16”. A larger heating surface means that the flash unit needs a beefier support system, and you’ll need more space to maneuver it around your shop. 

This flash is great for a garage shop. It can be used in residential areas, but requires a 20 amp circuit. You can find this circuit at a local hardware store or online. A typical household has a 120V outlet rated at 15 amps. Check with your electrician if you have questions about your power lines and power outlets. 


The 18”X18” flash unit will work great with standard-sized prints. If you’re going bigger, you might need a larger flash. 


a large flash dryer hovers over a platen


Imagine this for a second: you’ve been turning oversized print orders away because you don’t have the large flash capacity to handle them. The flash dryer you have is adequate, but the “sweet spot” of the heating element doesn’t cover an entire large print. Sound familiar? Meet the answer to your troubles: the RileyFlash 1824

This flash dryer can handle oversized prints without trouble. It also boasts 3233 watts of power and a tilt control knob so you can adjust the height of the flash easily. Best of all, the RileyFlash 1824 has an adjustable temperature control so you can dial in your flash and/or cure temperatures.

If you’re printing out of residential space—i.e a house or garage—take a look at your outlets before you jump in with this flash. The 18”X24” flash is 240 volts, which doesn’t come standard in most homes. Check with your electrician if you’re not sure about your home. 

So we’ve covered small, medium and large shops. But there’s one more awesome flash unit option to consider. 

a riley hopkins forced air flash dryer sits above a platen


Do you print with water-based ink? Finding that your gel/cure times are way longer than they should be? Check out the RileyFlash Forced Air. This flash unit is perfect for water-based shops. 

To properly flash and cure water-based ink, you need hot airflow. With the Riley Flash Forced Air flash dryer, you’ll get it. The flash has both an infrared and an air dryer, so it pushes hot air evenly across the print, evaporating the water. The flash also has a blower in the back of the dryer, providing a steady stream of air throughout the t-shirt.

Let’s talk specs for a second. This flash unit is best used in commercial settings because its a 240-volt plug. The heating element is 18”X18” and boasts a whopping 4000 watts. The flash dryer also has an on/off switch and a temperature control knob. Printing with water-based ink just got that much easier. 


a flash dryer in use in a shop

There’s a perfect flash dryer for every shop. No matter which flash dryer you use, make sure to test out your flash and cure temperatures and times, so you can get the most from your flash unit. Don’t sell yourself or your prints short. Get the right flash unit for your shop.
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