Field-Notes. Chemicals

After a healthy hiatus I mixed chemicals today in anticipation of a few days of actual printing. (instead of working in front of the computer.)  Here is a partial list of things you would need when printing Gumoils.  Gum Arabic (in powder form and diluted form.)  Ammonium OR Potassium Dichromate, Water color paper, distilled water, oil paints and U/V light.

 

 Some chemicals used in alternative photographic processes.

Some chemicals used in alternative photographic processes.

 Here, I've mixed up a 19% solution of Ammonium Dichromate. ( the nasty orange stuff) this is then added to 3 parts liquid Gum Arabic.

Here, I've mixed up a 19% solution of Ammonium Dichromate. ( the nasty orange stuff) this is then added to 3 parts liquid Gum Arabic.

 Then the watercolor paper is coated with the light sensitive emulsion.

Then the watercolor paper is coated with the light sensitive emulsion.

 11x14 paper coated and drying. Next comes step wedges and test prints.

11x14 paper coated and drying. Next comes step wedges and test prints.

Field-notes. Fixing ultra-violet lights

First the good news! The two bulbs I thought were blown are completely fine.

Now the bad news.  It wasn't the bulbs that were bad it was the fixture they get put into.  The poor unit is so old, parts of it are getting brittle with age and starting to crack. It seems one of the tabs that holds the pins of the bulb in place busted apart completely and now looks like it will have to be replaced.  Groan.

Stop the presses!  good news!  Frustrated,  I tried to put the pins of the bulb back into the slot and applied a little torque and ...well ....I guess The old adage "if it doesn't fit, force it."  actually paid off.   HAHA! Somehow its working.

So here are the lights hanging from the rafters with my table underneath.  The units measures around 30 x 48 but with a little swing I'm thinking i could possibly go up to 50 x 60.  That's for later though.

- Scott

Field-notes on Gumoil printing

Hi and welcome to the start of my field-notes/blog on gumoil printing.  I'll be going through the different parts of my work-through on the gumoil process as I get everything together to produce some extra large gumoils, If you've never heard of gumoil printing or are unfamiliar with the process and curious to learn more, hopefully these notes will shed some "light" on the process. Gumoil printing is a time consuming process and lots can go wrong, so its good to make every print count. Hopefully towards the end of this blog I'll be well on my way to rounding out a couple bodies of work.

 Ultra-violet

The gumoil process uses UV rays to make your exposure so the 1st step is to get my big ass Ultra-violet homemade light source back up and running!  This unit was made ages ago and donated to me by my old photography professor Warren Thompson.   The unit needed a little tender loving care but is still going strong. (fingers crossed) Here i am testing the lights, In the photo you might notice that the two bulbs on the left are out and need to be replaced.  Grrrr.  Those goggles look good on me but also serve another very important purpose.  Ultra-violet light is extremely damaging to ones eyeballs.  The UV tubes are powered up just long enough for me to see if they're burned out and to take this quick picture. Getting a slight tan is just a bonus.

Nuff for now, time to change some bulbs. 

 Getting a tan and testing out the Ultra-Violet lights

Getting a tan and testing out the Ultra-Violet lights