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| newrepublicsteve |
 Posted: Thu Jun 09, 2005 8:50 pm |
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Joined: 13 Nov 2004
Posts: 674
Location: Birmingham
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which kind do yo use
I am thinking of getting a new set up, but if I could find the right plans I might build again, so what's your exposure set up? |
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| Fool's Gold |
| Posted: Thu Jun 09, 2005 9:32 pm |
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Joined: 10 Mar 2005
Posts: 284
Location: Ontario Canada
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| I use 8 4' unfiltered blacklights 1.5" from the glass and 2" apart. Set inside a melamine box with a timer. I set it for 36 seconds for meshes 110, 125, 157 and for 26 seconds for 200 and 230. I get great burns with QTX. Best bang for your buck would probably be to buy a 1000W Metal Halid from a weed growing shop. Single point light source should give you better halftones. I bet you could get a whole setup for around $170 Us. Suspend it from a cord from the ceiling so you an adjust your hight. I think that's what we are going to do in our shop when our 30"x40" frames come in |
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IRONCLAD GRAPHICS: Custom screen printed posters, apparel and stickers. |
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| newrepublicsteve |
| Posted: Thu Jun 09, 2005 10:06 pm |
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Joined: 13 Nov 2004
Posts: 674
Location: Birmingham
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my biggest concern is my burn time and half tone development. I have looked at both systems, and just trying to decide which will work best...
I am also looking for some descent vacuum options |
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| skinny |
| Posted: Sat Jun 11, 2005 12:49 pm |
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Joined: 12 Sep 2004
Posts: 2706
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I use a white metal halide 400w bulb.
It is in a sun systems fixture and uses a balast from them too.
I get excellent exposures. I almost nevr do half tones.
The light is 5.5' away from the screen, exposure times are about 45 min for thick emulsion coatings.
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| newrepublicsteve |
| Posted: Sat Jun 11, 2005 12:53 pm |
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Joined: 13 Nov 2004
Posts: 674
Location: Birmingham
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is that 4-5 or 45....
wow
I would go out of business at 45 minutes a screen |
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| Fool's Gold |
| Posted: Sat Jun 11, 2005 1:27 pm |
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Joined: 10 Mar 2005
Posts: 284
Location: Ontario Canada
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defstarsteve wrote: my biggest concern is my burn time and half tone development. I have looked at both systems, and just trying to decide which will work best...
I am also looking for some descent vacuum options
I think if your concern is speed then the flo. tube setup is the best bet, unless you do a lot of process work, or very tight halftone registration; in which case the MH is best because of the increase in resolution. We just exposed a 6 screen job in under 20 minutes including washout, I think that's pretty good. |
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IRONCLAD GRAPHICS: Custom screen printed posters, apparel and stickers. |
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| skinny |
| Posted: Sun Jun 12, 2005 12:01 pm |
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Joined: 12 Sep 2004
Posts: 2706
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I make screens for decks, shirts, and stickers.
I am not under time pressures. Sometimes I take all day for a set of screens.
Either way I have a great set up and I am happy with the result.
I am currently fine tuning my concaved screen system. I can tell you that when you get into concaved screens, time is not as much of an issue. Mostly because the can be pricey to screw up. |
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| skinny |
| Posted: Sun Jun 12, 2005 12:05 pm |
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Joined: 12 Sep 2004
Posts: 2706
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One more thing...
The direct light source from a light this strong can leave over exposure marks in your screens. I usually set the screen off center from the light, I also use a black backer for every exposure, under the screen. |
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