I remember that once I went to work at a screen printing company, on a shelf there was a liter of vinegar, the cheapest ...

Talking to a colleague who was also a newbie there, we tried to find out what the use of that product was in screen printing ... I said it was used to catalyze the emulsion of plates. These, once developed, were subjected to an acetic acid passage. Which, with its azedo, made the newly developed emulsion a strong matrix for many runs.

My colleague said it was to put into the ink, like the other culinary seasoning, salt, that fetid apple cider vinegar was used as a makeshift additive to control the viscosity of the water-based ink. It also had the magical property of eliminating microorganisms that could contaminate the inkwell. After all, vinegar neutralizes even the burning of living water!
In the middle of that discussion we mentioned the use of vinegar to avoid "fisheye" and other failures in the screen printing matrix. To do this, we wash it with vinegar and rinse it under running water, before emulsifying the matrix. Removal of grease residues from polyester.

All these possibilities of using vinegar in screen printing were already being taken into account. Until the screenprinter who owned the vinegar arrived, the one who had bought it and put it on the shelf. We all thought that he had a complete opinion on the true use of the by-product in screen printing "technical application". We asked the scriptwriter:
-Why do you use that vinegar brother ??? Hey? Hey?
-To season the salad! Hey? He answered without much mystery.


Another true story, of the strange day-to-day life of a screen printer, was the day he arrived at the store, a beginner screen printer, trying to clarify a question about how to print a service that he had hired.

For example, the guy takes the job without knowing how to do it and goes crazy trying to figure out how to do it.
It was a unit of those MMA fighter pants, which fit very tight on the boy's butt!
He had to stamp the highlighted logo on the back, just above the ass!

The only challenge was to get a paint that was stretchy and did not crack, while the bad boy beat the opponent.
In fact, I did not feel at all comfortable holding that sweaty "substrate" in my hand, I told the child to use a water-based elastic ink, as is for synthetic textiles ...
-Which brand? Where do I buy?
-I do not know. Look it up!
The other colleague gave a more obvious and simple solution, the use of plastisol paint, which is elastic in nature!

The boy (he was a very skinny boy) went to seal things up. When it comes to drying, with the thermal blower ... That's it! He got burned with the bottom of the shorts!
It must have been the biggest beating in the world!

Where is the salad?

The worst way to learn that: "If you don't know how to do it, don't do it!" It's wrong where it can't be fixed!