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| emoxfag |
 Posted: Sun Dec 04, 2005 6:25 pm |
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Joined: 31 Oct 2005
Posts: 80
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| Ive been using the gree diazon emulsion for my prints, but i just got some (i think) Union emulsion. its pre senzitized red coloured stuff. im having trouble with it actually adhereing to the screen. also what kind of light can i use to expose it. i normally use a 500 watt blue bulb. i need to do some test strips though so im more worried about the adhersion. i have a 12 xx screen that seems to be fine. |
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| Earwick66 |
| Posted: Mon Dec 05, 2005 1:06 am |
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Joined: 27 Oct 2005
Posts: 3565
Location: Grand Saline,TX
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| i'm not quite sure i understand what you mean by "it wont adhere to the screen"...are you using an emulsion scoop to put the emulsion on the screen? did you stir up the "pre-sensitized" emulsion in the bucket or just pour it in there and try to scoop it on? i assume what you're saying is after you coat the screen it's mostly washing off and not holding your "image" on the screen after you expose it?..hmmm..i'll check back and see if i can offer any help |
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| emoxfag |
| Posted: Mon Dec 05, 2005 2:39 am |
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Joined: 31 Oct 2005
Posts: 80
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| no ive never used a scoop. i stir the emulsion then pour it on and squeege it on. but after its dried, burnt and i go to rinse it out, the emulsion wahes right out. would that happen if its under exposed? |
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| Earwick66 |
| Posted: Mon Dec 05, 2005 3:35 am |
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Joined: 27 Oct 2005
Posts: 3565
Location: Grand Saline,TX
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yes..under exposure will let the emulsion wash right off..i would suggest(higly suggest)getting yourself a coating scoop(dont know the proper term for this device)..its basically a V-Shaped trough that you pour the emulsion into and it has 2 "edges" that you put up against the screen and go from one edge to the other(top to bottom)and it lays a perfectly thick(or thin) layer of emulsion on the screen so that it's uniform and allows for your image to be consistent in your screen...using this "scoop" i do a layer on the inside then flip the screen and do it on the backside..then repeat..so..2 times on each side(inside and backside+inside and backside)
what happens when you do it this way...the emulsion on the inside then bonds with the emulsion you spread on the backside..doing it twice makes the "stencil" thick enough to hold the image you burn into the screen..if you wanted to, you may even be able to use your method of squeegeeing it onto the screen but be sure and do it on the backside as well(if you havent already)..another thing..in the room you use to coat your screens..you dont have bare lightbulbs you're working under do you?...you need to at least have "yellow sleeve filters" covering the overhead light so your screens dont get exposed pre-maturely...if you get the coating down pat..try adding more time to your exposing and hopefully youll figure it out  i'll keep checking this area and help out when i can |
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| emoxfag |
| Posted: Tue Dec 06, 2005 2:53 am |
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Joined: 31 Oct 2005
Posts: 80
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thats how i coat my screens. i do a light coat, then i squegee it through both sides a few times, then i do a front coat, then a back coat. i think my screen may have be in need of degreasing or it was under exposed. im doing a test strip next to set my times better. the same way i did in photography.
oh and i work in primarily the dark while handeling screens. the only light is what come from under the door and from what i think im doing it has not chance of over exposing. hah. |
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| Fool's Gold |
| Posted: Fri Dec 09, 2005 10:46 am |
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Joined: 10 Mar 2005
Posts: 284
Location: Ontario Canada
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| you need an EVEN, THIN coat of emulsion. I squeegee is not really a good way to do this. When you have an uneven layer of emulsion then your prints will not expose correctly (it takes light longer to penetrate thicker emulsion, and visa vera for thin coats. same reason that 110 takes longer then 355 to expose) and leave an uneven ink deposit. Just go out and get a scoop coater from a supply house and have no problems evermore (with coating, just other problems) |
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| emoxfag |
| Posted: Tue Dec 13, 2005 1:09 am |
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Joined: 31 Oct 2005
Posts: 80
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thanks but the problem is i didn't time my exposures right. i got it down pretty good now and my screens are working great. for some reason i just farted out and forgot what that fuck i was doing.
anyway my shirst came out awesome and i made a good handfull of cash, but thatnks for the tips. (i ordered a screen coater yeaterday) |
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| Fool's Gold |
| Posted: Wed Dec 14, 2005 5:45 pm |
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Joined: 10 Mar 2005
Posts: 284
Location: Ontario Canada
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| I almost lit a pallet on fire today . . . we all forget what we are doing sometimes |
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