Ochre Pigments | Part 1: Preparation of Earth Colours
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- เผยแพร่เมื่อ 20 มิ.ย. 2024
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You need to fire treat the raw stones first... to make them easier to grind and attain a more stable oxidation state and final color.
Doesn’t that change the color of many ochres? I know heating after grinding does.
@@annekabrimhall1059 Yes.
How do you know what colors you’ll get? What if you need a yellow ochre and you cooked it darker?
@@annekabrimhall1059 Test a small bit first.
Oxidation state of sediment clay? I mean, it won't change in our lifetimes or nothing. Baking Yellow Ochre will first yield you a Pink umber, (which dries faster than Yellow) at around 500C. 600C to 700C you can achieve burnt umber shades. The raw stuff is still good though, extremally stable up there with gold. Bake for variety of shades, not for lightfastness.
Nice demo. I feel like a scientist now...
Thanks for a great video! You are doing a fantastic job, keep it continue. Regards from Poland.
This was enlightening. Thank you.
I have collected 8 bags of ochre/umber, sienna clays in North Georgia. They range from white to beige to orange to brown to dark chocolate. I will be removing the sand from them then drying them and making a set of pigments for my daughter's Christmas gift. I have enough product to experiment a little with roasting too. Glad to find your video on the how to process at home. Thank You
What a great idea! How did it pan out?
@@pashaveres4629 The clays did well except for a blueish sample that turned grey with exposure to air for a time. I tried to turn it bsck to blue with mild acids but to no avail. I did not try baking it which in some cases changes colors. I might try that later
Did you try roasting it? This is interesting to hear about. Thank you for sharing.
I love your art lab😍😍😘
Thank you for the video! I will try to do my own pigments next week! Best regards from Brazil :)
Thank you!
I was searching such video,thank you and good luck!
Thank You.. I lke the way yu show all the process, speeded up as required :)
thank you, great vid!!
Great thing to do and teach kids1
Great video. Thank you ❤
thanks for sharing your knowledge, have you considered using a centrifuge to separate particle sizes when making paint? the size of particles are separated based on their density, you can also build a wood model which you spin to create centrifugal force (actual centrifuges can be pretty pricey)
I just found like... a hundred pounds of ochre, in many colors, in my backyard. We don't really have ocher where i am, so i think the old owner of the house brought them here? But this video will be useful to be sure
Complimenti, molto interessante
I really like this channel. Can the mortar and pestle method be used for any rock? What is the size of the mortar and pestle you are using? Thank you.
Thank you for sharing ! If making an ink, is the litigation process important in the final color result ? I tried grinding the rock fine enough and mixing with arabic gum and a little bit of water and vinegar. The color on paper is a beautiful yellow ochre and there's texture from the rock not being grounded fine enough but I enjoy it !
Levegating will help with the gritty texture and will make the colour cleaner
Could you also use oxides from the hardware store? Where I live there isn't a lot of accessible rock but there's clay could that also be used. Cheers!
How long did it take for the pigment to dry ? Was it dried naturally or in a microwave ?
Thank you for the video! I've been doing a lot of research on the topic. Have you read "The Alchemy of Paint" by Spike Bucklow? It's an interesting historical perspective.
I haven't read that but it sounds like it should go on my list thank you
I wonder if the grinding process would have been easier with a corn grinder?
is there a book where i could learn all about this ?
Is that the I Ching languishing on your shelf 😮?
Hey great video! I’m collecting rocks for my river and I try to make pigments. I still refine it with women’s tights few times and it is a fine dust but it’s still grainy when I mix it with oil.... why is this happening?
I would try levegating the powder by mixing it with water, stir it let it settle for 5-10 seconds and then pour of the lightest particles and leave the heavier grainy stuff behind. If you do this a few times it should help a lot. It may be that the rocks you are using are not suitable and you may need to look for some softer ochres.
The Alchemical Arts I will try the method you showed and I hope it will work! Maybe I need to grind in my muller further but 20+ minutes is a long time for it to still be grainy. Thank you so much!!
Have you ever used fine sandpaper rather then moling. I have done it and sand paper makes a fine powder.
Facts ...bcoz glass consumed. time to dry early
Hey, i am making pigments using a very dark and bloody coloured iron oxide. The ones you use make it super orangey, but the rust i have is almost blackish red. Its the kind of rust built up on the inside of a metal smoker. I think its a iron 2, 3 oxide mix, but i am unsure. How would i make the darker pigments? Im afraid if i did your method it would become lighter, but i need the deep reds.
You likely have some manganese in your pigment. My area has old iron mines and manganese mines and the combination makes the darkest pigments.
Managese sulphate you mean ?
hey i have seen many videos on youtube about making dye from purple cabbage but my question is can you make pigment out of it . please answer .
Yes but you need to use potassium alum and soda crystals, to attach to the colour in the solution and cause it to precipitate down to the bottom. Then just extra the water by which ever gentle way suits you i.e. coffee filter or just leave it to naturally evaporate. 😘
great tutorial but after you pour the pigment in the baking dish, your video cuts to the result but it is in the round bowl again. did you pour the what was in the square dish back into the bowl?
Using paper instead of dish glass,its easier to dry early
wouldn't one of those electric machine to make ceramics make things easier to synthesize pigment? Some are made for home-made ceramics,very affordable and compact.
Why not boil it off
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