Coating for small prints

Discussion in 'Alternative Processes' started by Jeremy, May 11, 2005.

  1. Jeremy

    Jeremy Member

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    Can anyone give me any hints on coating for very small prints? I have coated for 6x6 contacts before, but when I did that I just coated a 5x7 area and then layed all my 6x6 contacts on it at once. Any suggestions for when I want to do 3 1/4 x 4 1/4 contacts and do not want to coat a larger block?

    Also I have heard rules of thumb for the amount of coating solution to use, does this still apply when printing these smaller images? Any suggestions on a drop amount to use with a magic brush for 3 1/4 x 4 1/4?
     
  2. Joe Lipka

    Joe Lipka Member

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    Try to keep your volume/area ratio about the same. That's about all I can suggest.

    Can't make any suggestions on using the magic brush, I haven't started using mine yet.
     
  3. Kerik

    Kerik Member

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    3 or 4 drops each of ferric and metal should be enough. Use no larger than a 2" Magic Brush. And, although it needs to be fairly wet, don't leave too much water in the brush or you will dilute the sensitizer. Also, consider using a 4.5" coating rod (aka puddle pusher) instead.

    Kerik
    www.kerik.com
     
  4. photomc

    photomc Member

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    This will sound a little odd, Jeremy - and I love my magic bursh, but for the size you are talking about you might try using a the foam brush. Treat it just like the regular brush, wet it in di water, shake out the excess. I have used one to coat 4x5 and it really does not take up to much senitizer. It does require a very light touch, or you will end up with the paper surface coming apart, but that only happened to me when I kept at it to long. (I know you guys have told me that the foam brush isn't that good..but for the small size it works pretty good)
     
  5. Donald Qualls

    Donald Qualls Member

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    When I've coated cyanotype for 9x12 cm, I've either coated a 5x7 and cut it down after printing (gives a very neat, "finished" apperance because the overcoated edge gets trimmed off) or cut the paper to size and coated that. Either way, I use a foam brush and about 1 ml of each cyano solution for 5x7; that amount will nicely coat two 9x12 cm sheets. Personally, I like the "rough edge" look of the overcoat showing outside the image, so in future I will most likely coat 5x7 for 9x12 cm negatives and just leave the paper that size. I do, however, wish I could find a reinforced watercolor paper with less "tooth" than the cheap stuff I've been using; it's a little coarse for negatives smaller than 4x5.
     
  6. Phillip P. Dimor

    Phillip P. Dimor Member

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    I used to use a brush and i've tried several. The best for me was a glass coating rod. I used a plain old glass stirring rod with the tips scored and cracked off.
    The trouble is keeping it clean and free of grit, as well as the coating solution.

    I wipe the rod after every sheet and I filter the coating solution with a ball of cotton through the tip of a syringe needle (watch trainspotting.. :\ )

    The 3cc syringe with 1" or longer, 20g or larger bore is a godsend for this.. I use separate syringes (blunted tips) for the A and B solutions of cyanotype, PMK, rodinal, etc. Very handy! Sorry to get OT a bit..
     
  7. Kerik

    Kerik Member

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    If you haven't tried a Richeson Series 9010 (aka Magic Brush) you haven't tried the best...

    Kerik
    www.kerik.com
     
  8. Jeremy

    Jeremy Member

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