Opportunity is missed by most people because it is dressed in overalls and looks like work. - Thomas Edison
Used 159 for years. Great ink but wildly inconsistent. Had to add varying amounts of curable reducer, depending on the batch and cut each new bucket into the old one.Been using Wilflex Epic Quick for awhile now and it is excellent- perfectly consistent, does not climb, requires no modification, soft, rubbery, matte finish. Not quite as opaque/bright as 159 but the other characteristics make up for that. Biggest downside is the price and having to purchase from suppliers I don't care for so much.Warming your ink before printing will make a very big difference, especially with white. Have you tried this with the 159?
Sounds good. No problems with the opacity?
We use Frog's #3 to warm ink. Stir after warming but don't overstir! I forget the fancy pants technical term for this but the white pigments will do something weird if over worked by stirring or even on long runs and the rheology shifts. I believe this is a large part of why many auto users, and even some of us manual printers, print white so slowly at times when a faster stroke is typically more beneficial.
Quote from: ZooCity on August 23, 2012, 04:32:03 PMWe use Frog's #3 to warm ink. Stir after warming but don't overstir! I forget the fancy pants technical term for this but the white pigments will do something weird if over worked by stirring or even on long runs and the rheology shifts. I believe this is a large part of why many auto users, and even some of us manual printers, print white so slowly at times when a faster stroke is typically more beneficial.The technical term is shear. This happens with other Wilflex inks as well. With Quick White it will lose opacity at around 130 degrees if I remember right and come back when it gets above that and below. Thats the only flaw I have with it. Other than that its good to go.
I think the term you're looking for is 'dilatant flow'--the ink increases in viscosity because of applied shearing force...