To get the darkest film possible, use glossy photo paper, adjust the printer settings, use third-party inks, or-as a last resort-double up the films. If the transparency is not opaque, the screen will not expose well. Place the film in reverse onto the shirt side of the screen and tape it to the screen.For larger screens, use a higher distance and increase exposure time. The lower your bulb is, the shorter your exposure time, but the more direct your light source is to the center of the screen. Note: The higher your bulb is, the longer your exposure time, and the more coverage to the screen. In a light safe environment, center the bulb directly above the middle of the screen at a height of 12-15 inches.It’s best to find a fixture with a reflector on the back to direct the light as much as possible. Source a light fixture to power the bulb.A 16x20 screen will work the best with the DIY LED bulb. Since the bulb is small, the “sweet spot” for exposure will be smaller. DIY bulbs are meant for exposing smaller screens, like 16x20 or 20x24.New to screen exposure? Here’s seven simple steps to exposing a screen with a DIY bulb: RELATED: LED EXPOSURE: THE NEW STANDARD EXPOSING A SCREEN WITH THE DIY BULB Simply screw in the bulb to any light fixture and safely expose a screen with the recommended Baselayr Long Lasting emulsion for 10-11 minutes in a light safe environment. To make the switch, all you have to do is replace your UV exposure bulb with an LED bulb and continue as normal. With an LED exposure bulb, you’re going to get that well-baked, properly exposed screen. Similarly, an underexposed screen will work, but will break down much more quickly than a properly exposed screen (or well-baked cookie). An underbaked cookie is soft and yummy, but you can’t dunk it into milk without it falling apart. Think of exposing emulsion like baking cookies. The main reason printers love LEDs is because they can penetrate deeper into the emulsion layers, resulting in higher quality, more durable stencils. Why? Tons of reasons like their spectrum of light output, energy usage, longevity, speed, and consistency. More and more exposure units now come with LED bulbs. But what’s the big deal? How do DIY printers use an LED bulb as opposed to a UV bulb? Stick around to find out. LED exposure is now the standard for DIY printers, too. It’s more economical, less wasteful, provides stronger stencil development, and allows printers to do more with a screen. It’s no secret that LED exposure is the new standard.
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