[refusedone]

Hello everyone,

I am a newby, so hello to all you veterans out there! Does anyone happen to know of a development timetable for Ulano QTX Emulsion, single coat per side, 200 count screen, with 150 W Halogen bulb? Any info, either through professional or personal trial and error would be very helpful.
I'd even be willing to buy another lightsource (flourescent, etc), but don't want to have to invest in a $1,200 plus development device for hobby t-shirt making.

 

[identityburn]

Have you checked the documentation with the emulsion? I bought some Ulano CDF capillary film and it came with a sheet telling me the exposure times. Although, be warned it told me 16.5 minutes and it over exposed. I also did one at 5 by recommendation of Ranar (who made the exposure unit) but it seemed to be under. I'm going to try 10 and see how that works.

I guess it's just trial and error.

 

[refusedone]

Thanks for the advice. Yes, I did read the provided instructions, but they only include times for "Carbon Arc," "Metal Halide," "Pulsed Xenon," "Mercury Vapor," and "Flourescent Tubes (but only specialized tubes such as: unfiltered black light, and super diazo blue tubes, etc.)." This is why I'm asking about development times for non-specialised lighting.

 

[identityburn]

Oh ok, my best advice would be to call Ulano.

 

[Solmu]

I bought some Ulano CDF capillary film and it came with a sheet telling me the exposure times. Although, be warned it told me 16.5 minutes and it over exposed. I also did one at 5 by recommendation of Ranar (who made the exposure unit) but it seemed to be under. I'm going to try 10 and see how that works.

That seems like a reaaaally long time - is that because of your exposure source, or because of the capillary film? (I've never used capillary film before, so I'm wondering if long exposure times is something that goes along with it)

 

[identityburn]

I'm using a blacklight exposure unit from Ranar so it's not too powerful. I burned another screen today at 10 minutes and it seemed a hair too long, so I'm going to try 8. I know 5 isn't enough from my previous attempt though, not enough of the film was exposed so it had jagged edges.

 

[Solmu]

Fair enough. Thanks for the info, and good luck with the exposure.

 

[Squirts]

Hello everyone,

I am a newby, so hello to all you veterans out there! Does anyone happen to know of a development timetable for Ulano QTX Emulsion, single coat per side, 200 count screen, with 150 W Halogen bulb? Any info, either through professional or personal trial and error would be very helpful.
I'd even be willing to buy another lightsource (flourescent, etc), but don't want to have to invest in a $1,200 plus development device for hobby t-shirt making.

Most screen Supply companies can sell you an exposure claculator for about 10 dollars.... its like a photo negative stripwith incresing darker steps... you lay it on your screen when your exposing one and the last number washed out will tell you how under or overexposed you are..... saves alot of time guessing.....Chuck

 

[identityburn]

Cool, thanks for the tip, I'll have to check that out.

 

[Solmu]

Most screen Supply companies can sell you an exposure claculator for about 10 dollars....

Last time I bought supplies the guy told me about that, but he didn't explain it very well so I didn't really know what he was talking about. I knew a method existed, but that was about it

Thanks for the explanation.

 

[luvtofiddle]

a good place to ask questions is screenprinters.net
I know you should do a step test to determine your best time. someone on thoes fourms can help you better!

 

[midtown]

Exposure times can be tested with a "Step Test".
The forums at screenprinters.net have links to the procedure as well as downloadable "Step" to use in the development.