How to make a ground glass for a large format camera. DIY - Vlog #105

Last week I've made a ground glass for my Linhof Kardan 5x7" camera and I've done many tests in carbon double transfer carbon print process. I'm very pleased with the ground glass and the mixing of potassium dichromate with sodium hidroxide. I'm truly amazed that after four days standing at room temperature I was getting perfectly clear whites and rich blacks.

Anyway I skipped two ground glass tricks in my vlog. If in emergency, when you traveled to a location and you brake the ground glass, you can make one on the spot.
1) the best is to have some silicon carbide with you and you can make one in 30 minutes.

2) If you don't have the silicon carbide, go and buy finest sanding paper you can get. Most likely it will be too coarse, so you can add some ash from fire place or some other material, like salt with oversaturated water or if you are wet plate collodion photographer, then you have on you the ferrous sulphate and if you add very little water, it will make a fine grinding powder.

3) if you are a wet plate collodion photographer, then you cut your glass to the size of the ground glass, pour collodion on it and sub it into silvernitrate for two minutes. That will make the glass milky in just the right way to work as a good ground glass.

OK, now this is done, now I can start preparing for my epic Christmas special! Subscribe, recommend the channel, or even support it by buying a book or becoming a patreon! Either way... Topshit happens!

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Видео How to make a ground glass for a large format camera. DIY - Vlog #105 канала Borut Peterlin