Pakchoi screenprint

Mary Adam, Pakchoi, screenprint on 9 x 12" paper

The screens for this were made with drawing fluid and screen filler which is time consuming because of waiting for the screen to dry at each stage. I like the technique because it allows for some precision, and clean-up is fairly easy. It's not ideal for fine lines however and in fact this is the third try making this print, the first two fell by the wayside -- it's been going on for months! There won't be many prints left after editing but I'm pleased it has finally come into existence.

New wooden screen attached to desk with hinge clamps

I also want to correct some misinformation from a while back about the availability of wooden screens (http://mary-adam.blogspot.com/2011/08/testing-gummed-paper-tape.html). In fact wooden screens are still being made in the traditional way with a groove on the back to hold the cord which is used to stretch the fabric -- I got one recently from Dick Blick, along with a pair of heavyweight hinge clamps specially designed for screen printing. The clamps are fixed to the desk with screws and the wing nuts are adjustable to release the screen for cleaning. And the fabric can be changed at home.

Gummed paper tape 2

The screen with the new fabric and gummed paper tape. This will be followed by two coats of urethane varnish over the tape and about 5 mm of screen. A heavier weight of paper would have been better but this is doing the job well enough for now. Will try cartridge paper next time.

Testing the gummed paper tape

Brown paper with a thin coating of gum arabic.

The fabric on my small screen needs changing. It's an old-fashioned wooden frame which enables me to change the fabric myself. I found out yesterday that this type of frame is no longer being made,*** (wooden frames are available, see below)  the aluminum ones are preferred because they don't warp. The disadvantage of aluminum frames is that you have to send them to a shop to stretch new fabric.

Luckily screens don't need new fabric often. The small screen has held up well for about three years, through countless washings, often with chemicals such as bleach. Now it has a haze of ghost images and the gummed tape is breaking up. The tape on that occasion came from a roll which was new at the time but which has since become stuck together because of humidity. So that idea about making my own gummed tape in small amounts as needed now comes into play.

For this job the tape has to stick well to the wood and the screen fabric, I want it to last for a couple of years. The idea is to seal the join between the fabric and the wood so that ink can be cleaned out of the screen thoroughly after use.

The brown paper that I have is rather thin but I tried it anyway. The first try didn't go too well. I applied a single coat of gum arabic with an ordinary soft bristle brush, about a No. 8. Afterwards I realised the gum was thick in places. Went ahead today and cut it into two-inch strips, moistened them with a wad of damp kitchen paper, and stuck them onto the inside of the frame and about 3/4" onto the fabric. The tape stuck in some places and came away in others, which isn't good enough, so I pulled it all off.

I  used the same tape to stick a piece of watercolour paper to plywood and that was fine, it stayed firm.

I made a second set of tape, applying a second thin coat when the first was dry instead of just one coat. I then cut the paper into strips as before, moistened it and applied it to the screen. This appears to have stuck properly. When the tape is fully dry tomorrow I will varnish the whole frame and it should be good for another couple of years.

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*** EDIT, added March 11, 2012: Wooden frames for screen-printing are in fact still being made, see http://mary-adam.blogspot.com/2012/03/pakchoi-screenprint.html

The old screen, a trial run

The screen has been exposed, only 12 minutes, and the picture shows the "open" screen after washing out the image. It looks better than the last time but it's still not great. I decided to do a trial run anyway to see what other issues might crop up.

The proofs drying on a line. 

Pulling the proofs was one of the messiest things I've ever done in my studio, it would be better somewhere outside the house like under the eaves. The proofs didn't turn out all that well, as expected, and unfortunately the screen fabric got a small tear during overzealous clean up.  It will last for another short run or two and then I'll replace the fabric. Other than that -- it was terrific to be pulling prints and I like the potential that this technique has for future work.

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Screen print, a failed attempt

My first attempt to make a screen print has failed.

The image, a detailed drawing of a tree, was ideal for a photo stencil, so yesterday I prepared the screen with photo emulsion and left it in the dark to dry. Today I set up the light -- a 150-watt flood lamp attached to a piece of 3 x 1" board -- and gave the screen an exposure of 24 minutes.


Sad to say, the unexposed parts of the screen (the drawing) failed to "open" properly afterwards and in the end I had to abandon it and wash out the whole screen, which was pretty difficult to do. It took over an hour of scrubbing and washing with chemicals.

I think the exposure time was too long. I will try again with a shorter exposure and possibly raise the lamp a couple of inches.

I can't complain, having skipped the step in the reference book* which recommends doing a series of timed test exposures.

*Screen Printing, Contemporary Methods and Materials by Frances and Norman Lassiter, 1978, Hunt Manufacturing, Philadelphia

The old screen, part 2

It's taken a while but finally, after some unforeseen delays, I got replacement hinges for the old screen. I put them on last night and here are two pictures. The first one shows the newly-installed hinges, and the second shows the screen propped up, as it will be in use, e.g. when changing the paper. Ideally it would have a swing-arm on the right (far) side to prop it up in between prints, but for now there's a clothes peg holding it up.





In the first picture you can just about see the removable pins in the hinges, both facing away from the centre. They're rather stiff, hope they'll get easier to remove and replace over time. Or maybe I should oil them.

It's easy to buy ready-made screens at some art suppliers, so why go to such lengths to reclaim this old one? I don't quite know myself actually. Casting around for reasons I can see that it revives a connection with the past and gives me a means of making different kinds of marks for very little outlay. Or, as an incurable hoarder, is it rather the satisfaction of being able to say that something came in handy after all? (Hoarders live for such moments.)

But I must produce something with it before I can say that.

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An old screen

Over the past few days I've been reclaiming an old screen-printing screen. It's at least twenty years old, maybe twenty-five, a remnant of a course I attended many years ago in Arima. I hate throwing things out and that's why I still have this strange object.

I can't remember the name of the person who taught the course but she did a great job, teaching all the basic methods and processes including photo stencils. The course occupied one whole day each week over six weeks.

We made our own screens on the first day. I think our tutor must have supplied the materials, they are of such good quality and have held up so well. The frame and baseboard are perfectly sound showing no signs of warping or rotting despite years of neglect. The screen itself appears to be in good shape apart from ghost images. I've washed it and dried it and the mesh is taut and looks intact. The hinges were rusty and a pin was missing, so I removed them and will attach new ones next week. Then, with a squeegee and some ink, all I will need is one or two ideas. I'll post the first presentable results here (note the qualifier -- "presentable").