Скачать или смотреть Chapter 3 Comic Book conservation: Cover tear seal repair using Japanese paper techniques

In this episode we continue our further conservation repairs to the cover of this beautiful 1945 Schomburg Thrilling Comics 51. The temporary white tengujo paper repairs are removed and the corrected tan tengujo paper is put in place. Then a piece of the cover is also re-attached using the same method. Finally, the cover wrap is pressed flat

Product Links:

450 nanometer Blue LED panels
https://www.yescomusa.com/products/13...

Hollytex non-woven fiber
https://museumservicescorporation.com...

Calcium Hydroxide
https://www.amazon.com/dp/B01BXZOSLM?...

Triton X-100
https://www.amazon.com/dp/B07SGY8LRC?...

Calcium Hydroxide bath recipe:

I follow Dr. Paul's procedures at Liberty Hill Comics with the addition of 1oz of 12% Hydrogen Peroxide per gallon of mixture.

Mix up the following super concentrate formula in one container then dilute that in a 1:4 ratio with warm water for the bath. I heat the water to 140F to ensure the powered calcium hydroxide is fully melted into the mixture.

2 grams of Calcium Hydroxide (about a 1/4 tsp)
1 liter of water
.5% by volume Triton-X (about 6-10 drops)

1oz of 12% Hydrogen Peroxide per gallon of bath (This may form some micro-bubbles during the bath. This is normal.

Bath should first be tested for 5 min to ensure that there is no color loss or to strong of a mixture. Never more than a 30 min bath.

Why I put Hydrogen Peroxide in the bath and not mist it?

The sprayer you use, no matter how fine of a mist it produces, will cause micro-specking of the paper that is visible under an ultraviolet light. Yes, CGC uses a UV lamp. Putting HP in the aqueous bath, allows for a uniform absorption into the paper, Cover or wrap. Then once the paper is exposed to 460nm Blue LED, the absorbed HP whitens/lightens the paper.

BLED exposure

I have tried multiple wavelengths of blue LEDs and I have found that 450nm-460nm works best at a 3hr exposure time followed by a 3hr dwell (rest) and a 2nd 3hr exposure. I no longer use a box with a blue LED. I built a multi-tier mirror chamber that can handle an entire comic (cover & wraps both sides) at a time. (Visit the Instagram for Flying L Comics to see it).

  / flyinglcomics  

The Blue LED exposure will cause the paper to contract and dry out. Re-humidify it and put the cover or wrap into the heat press at 160F for 10min. Re-assemble the book. Re-humidify the assembled book once more. Re-roll/fold it then press as usual.

Cheers!
Larry

 @DrPaulKosnik  Liberty Hill Comics
 @A1ComicsINC 
 @ImmaculateComics  My LCS!