Will This Light Work? Screen Exposure For Beginners | Chromaline Screen Print Products

[@sethp5640]

Thanks for the vid!

[@chromalinescreenprintproducts]

no problem

[@PixelGraphicsCoLLC]

I am just getting my feet wet in screen printing and I have cut some vinyl stencils on my plotter and they work well (just on one color applications) Now, I want to expose some diazo emulsion on screens cause that's the way to do it properly and am converting a home made light table I have, into a UV unit by just changing the fluorescent tubes to some 365 NM UV. I will post later on how it performs.

[@buildonbudgetph4662]

I'm using a cheap growllight for a certain emulsion and it works perfectly. It also shortens expo time compared to my old expo unit with fluorescent on it.

[@chromalinescreenprintproducts]

That’s great! DIY setups definitely can work when the proper testing is done 👍🏼

[@michaelhaasjes8066]

I use a 400 watt metal halide bulb. a 20x24 screen takes 12-14 minutes to expose depending on whether the mesh is dyed or not. I'm using chromaline udc hv dual cure emulsion. I usually post harden my stencils, this makes them more durable and easier to reclaim. The bulb I use is a lamp for growing plants which does emit enough light in the uv spectrum to cure the emulsion. Led seems like the way to go with smaller format screens being more efficient than high intensity discharge lamps. In a high production setting exposing dozens of screens per shift a commercial exposure unit is the only thing that makes sense.

[@chromalinescreenprintproducts]

@@michaelhaasjes8066 🙌🏼🙌🏼🙌🏼

[@JenniferBrown-y7j]

My $40 wooden box with 4/4' flourescent bulbs has worked great. I was actually hoping he would go into exposure times for each light source but I was wrong.

[@chromalinescreenprintproducts]

@@JenniferBrown-y7j exposure times will vary based on emulsion type, artwork, mesh color, etc. so there’s not just one general exposure time for everyone. We have a different video showing how to determine your exposure time using an exposure calculator

[@SVSNVIDS]

so is a metal hallide bulb out of something like a Douthit exposure unit compatible with Chrmoalime. What type of emulsion is Chromalime, we just switched to it

[@chromalinescreenprintproducts]

Chromaline is a pure photopolymer emulsion designed for humidity resistance and plastisol ink. Yes you can use the Douthitt unit to expose. Just do an exposure test to find out your exposure time 👍🏼

[@kthybrown007]

I put up a very bright LED work light (suspended) over my quilting machine / frame. It was not expensive and was from Home Depot. I prefer using the sun, however living in Oregon sometimes precludes that method. I discovered that the bright light over my quilting frame works very well. I don't believe a "box" is a useful investment, as it is easy to place the screen to be exposed with the image and glass on a black piece of felt in a box lid (like a paper or bankers box for portability) and with a piece of thick cardboard "lid" or cover to protect it from light except when exposing. I place the box lid / exposure "sandwich" on the quilt or whatever I happen to have mounted on the quilting frame (a table would do) and sometimes elevate it a little more with a portable footstool or box. With my iphone timer running, I uncover the glass/emulsion/black felt sandwich for the needed time, then quickly re-cover it with the cardboard sheet, then pick up the whole thing and take it to the kitchen to rinse. It works great and is very affordable.

[@chromalinescreenprintproducts]

@@kthybrown007 thx for sharing!

[@kabirsdrawingacademy7396]

How long do you keep it on the LED bulb ?

[@Lumbrera-ks1bt]

led es la mejor opción

[@chromalinescreenprintproducts]

As long as it is in the correct wavelength!

[@Lumbrera-ks1bt]

@@chromalinescreenprintproducts es correcto, hoy en día el led uv se puede fabricar en la longitud de onda que necesitemos @chromalinescreenprintproducts is correct, today UV LED can be manufactured in the wavelength we need

[@marcusmcglone4131]

you made a whole list of lights that wont work.. but didnt name a damn thing that IS good to use.

[@chromalinescreenprintproducts]

Many of the ones mentioned will work, it just depends on what wavelength the light source is and what emulsion you are exposing. If you want a specific light source, we recommend the Quick Image exposure table top unit, or the LTS laser-to-screen auto exposure for larger shops.

[@pmorrow962]

So spend $800 is your answer..NOT

[@chromalinescreenprintproducts]

We also did a video on using the sun for exposure

[@elevated-apparel]

Well in screen printing that's nothing. I was a DIY person. Tried to cut corners all the time. Built a exposure unit. Times where everywhere. Brought a rxp converted it to led and now get 20 second burn. This made a world of difference. Next was the dry cabinet. This seemed to give so much issues. It was a hit it miss. Ran thru so many screens being not fully dry and burning issues. Spent the $3600 and got the dri-vault when I say big difference I mean big big big big difference. I can dry 10 screens in as little as 8 minutes if I'm pre heating the unit.

[@chromalinescreenprintproducts]

@@elevated-apparel couldn’t agree more!!! 🙌🏼

[@kabirsdrawingacademy7396]

Sir! Do You have any Social Media ID?I want to learn Screen Printing With you.