how do i line-up four screens on a workbench to print?

[Ali Osman]

Sorry to answer with a negative comment, but you are attempting
to screen print process colours without any knowledge whatsoever about the screen printing process, you are attempting the impossible. ever heard of moire patterning? ever heard of ‘snap off’, ever heard of ‘halftone screened’ photo positives, retarders, what mix of solvents will you use, has your printing environment got a fixed ambient temperature??
Exposures for separate screens, printed and angled at certain degrees to create the halftones without moire?

Heard of colour theory?

How do you intend to make the screen?
Have you a vacuum exposure unit?
What inks will you use?
Correct squeegee? which blade profile? shore hardness? hard or soft?
Darkroom?
Screen line/mesh count?
Mesh? nylon or fine meshed metal?
Screen colour? yes that matters when exposing screens!

Do you know how to coat /scrape screens and expose, wash out, set up etc?

CYMK relies on registration marks exposed on the outers of the screen to align correctly, if you don’t know the setup and how the process works, it simply will not work!

Leave the four colour process screen printing to the professionals with fully automatic machinery.
Process cymk in screen process is very difficult indeed to do and not for the beginner. In fact to do properly is a nightmare!

A four colour carousel is ‘not’ the same as a 4 colour process cymk print
you’re obviously confused with the terms of 4 colour and need to get these terms clarified as you seem quite lost here?
Wooden screens are useless as over a matter of time they will buckle under mesh tension, you’ll need aluminum frames.

You’re just heading for trouble printing with a screen hinged to a bench
there’s a lot more to screen printing than it looks. My advice is to buy the correct equipment and take the 3 year further education college course it takes to become fully qualified.

[Peter Dee]

Ali, you have made only 3 posts and 2 of them I consider to be condescending in the extreme.
Why don’t you impart some of your wisdom with positive helpful responses instead of acting all high & mighty and mocking those who are trying their best?
Unlike yourself, not all of us are expert in everything but what we do know, we try and offer some help along the line.

[David Rowland]

nnsg, i think you will have to focus on spot (single or two colours) for now. Long learning curve in screen printing and the CMYK is something that takes a lot of experience to achieve good results, CMYK is easier to print on the more expensive UV ink / dryer setup.

[John Gregson]

If your printing t’shirts you will definately need a carousel. If your printing paper/card/vinyl you would use a hand bench. Don’t know what you want to print so if you gave more info you might get more help.

John

[Mark Latchford]

Just one point that may help if you are really going to try 4 col process screening is to use a geometric line screen as this will eliminate Moire and it does make it slightly easier. If you are going to use a hinged system on a table make sure that there is a block at one end of the screen to stop any extra movement of the screen when in the print position. This should stop any screen movement. Always print in the same direction as well so that you get the same stencil movement when laying down the ink. Also make sure you have a good vacuum base otherwise you haven’t got much chance at all of getting a good result.
Just my twopenneth. 4 colour screening is not to hard as long as you also make sure that you are in a dust free environment.