Hey, I'm having a horrible time exposing my screens at home. My main question is what light source/bulb to use. I tried a video/film flood that I got at a camera suply store when I got my safe light and that didn't work. What light source do you guys use or have heard used.
I must say I thought this would be the easiest part.
mary
I must say I thought this would be the easiest part.
mary
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Re: home exposure light source?
Sun, July 16, 2006 - 12:54 PMExposing screens was a very difficult task for me, at first. I use a homemade unit with 4 ultraviolet tubes. My exposure times range from 45 seconds to 2.5 minutes depending on the mesh I am using. Send me an email if you need plans. -
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Re: home exposure light source?
Wed, July 26, 2006 - 4:36 AMSolomon,
Might I also see your plans. I am just getting started. No tees yet just 'flatstock'.
cmarch0256@charter.net
thanx,
chip
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Re: home exposure light source?
Sun, June 24, 2007 - 11:10 PMHi Solomon,
Could send me the plans for a homemade exposure unit? Thanks.
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Tribe - light
Wed, July 26, 2006 - 4:42 AMMary,
As I am in a simular situation - I would be interested in any other probs that you have encountered. I have silk-screened for 5 years and as a job loved it. Now my life has changed drasticaly and I've got to find a way to start out on my own. Change is good and I look ahead with a smily and gladness in my heart. I can do this just as I'm sure you can do it.
Thanx,
chip
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Re: home exposure light source?
Wed, October 25, 2006 - 4:47 PMi use 3 250 watt hallogen flood lamps, the kind you would find at any hardware store, sometime in the near future i plan to build a new exposure unit that can expose auto size screens (23 x 31). i have exposed half tone screens with no problems.
get the halogen light 500w and mount it so that it is about 35 inches away from your screen. on thing that will cause problems is if your light source is too close to the screen, and heating up your emulsion to more than 95 degrees, you can check this with a temp gun if you have one
exposure times will vary depending on alot, but you should be looking at 7 -10 minutes, coat a bunch of screens and keep trying different times till you get it right.
hint: depending on how old or dry your emulsion coating is can dramatically change exposure time. example i leave my screens to dry over night, if i expose it after 1 day 6 min 20 sec every day after that i drop off about 30 seconds of exposure time
good luck
levi
www.chaosprinting.com -
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Re: home exposure light source?
Tue, January 23, 2007 - 6:44 PMI'd love to get copies of the home exposure unit plans as well, if you're still giving them out. I'm just getting started and that sounds like a much better solution than fighting through the other stuff. Thanks!
my e-mail is billlizor@gmail.com -
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Re: home exposure light source?
Tue, January 30, 2007 - 5:20 PMMy you can use a regular light bulb places about 10in from the screen and a heavy piece of glass to hold the positive in place and expose for about 45 minutes. HTH!
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Re: home exposure light source?
Sun, February 17, 2008 - 3:24 AMIve got an exposure time of 8 mins. Im using a 500w photoflood bulb with aluminium pendant style shade. The light is 15 inches above my screen.
Im using speedball emulsion & i followed their instructions for my size screen with photoflood bulb. Only different thing i did was that in their instructions the exposure time is 16 mins at 15 inches with a 250 watt photoflood bulb.
Since i had a 500w photoflood bulb i just halved the exposure time to 8 mins and it worked perfectly (to my absolute joy and surprise) I kept a small desk fan blowing on the screen so their would be no heat on it from the 500w bulb.
Picture here: i15.photobucket.com/albums/a...F3442.jpg
The actual lamp i used to house the bulb and shade was a 7 euro lamp from argos which i modified. It had a n e27 fitting which is same as the bulb.
