Opportunity is missed by most people because it is dressed in overalls and looks like work. - Thomas Edison
Quote from: Jon on January 12, 2013, 03:12:38 PMOk let me explain. D- base is clear and has binding agents in it.. D- white is white pigment added to clear base. Base is the binding agent that makes the pigment in the ink or that you add stick to the shirt. You did 70 percent clear ink to 30 percent white and expected a bright white. Discharge white will feel like crap until washed. Basing it down a little will help coat all the fibers. This will make the white look brighter since all the viewable fibers have been died.Discharge white is not white. Compared to quick white its about 7 percent less bright. Depending on the shirt color brand and about 10 other things the brightness will very. Unless your putting the discharged white next to a white sheet of paper it looks bright white on a good discharging shirt and color.Hope this helpsI did 70/30 because that was what was side to do on another thread. The time before that I ran straight white and it was white yes, not super crazy white but yes felt like crap yes. Never test washed it because it also didn't look that amazing. Again it may be my expectations.
Ok let me explain. D- base is clear and has binding agents in it.. D- white is white pigment added to clear base. Base is the binding agent that makes the pigment in the ink or that you add stick to the shirt. You did 70 percent clear ink to 30 percent white and expected a bright white. Discharge white will feel like crap until washed. Basing it down a little will help coat all the fibers. This will make the white look brighter since all the viewable fibers have been died.Discharge white is not white. Compared to quick white its about 7 percent less bright. Depending on the shirt color brand and about 10 other things the brightness will very. Unless your putting the discharged white next to a white sheet of paper it looks bright white on a good discharging shirt and color.Hope this helps
Brandt, I didn't notice if anyone already posted this or not, but get yourself a damn scale! You're not usually one to pinch pennies, and you are now involved with a chemistry that is not going to give consistent results mixing by eye.
I don't know how small the smallest quantity that you weighed was, but it sounds like you are weighing almost three grams(2. as your smallest reading.If you are doing batches by the pound, that may be fine as your smallest amount of 5% of a lb is .8 oz, easily within your reading range.It's just when someone reports trouble in this area, accuracy in proportions is the first place to check.
Get a scale ....that reads at least to tenths of grams.
That is correct. However, you have a minimum mix of 300-500g with discharge, depending, to ensure there is enough ink in the screen. Our Sartorius does well enough at tenths but a small scale to hundredths would be a must for a big formula testing project. That or waste a lot of ink. Brandt, seriously, get a scale. You can use it for plastisol too. You are just going to chase yer trail without a consistent way to record mixes.