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dpack
Joined: 02 Jul 2005 Posts: 46168 Location: yes
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dpack
Joined: 02 Jul 2005 Posts: 46168 Location: yes
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Posted: Tue Apr 25, 23 1:49 pm Post subject: |
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price for purpose again
i need to make some natural stuff dissolve and
abs ethanol, 97.something %. sold as bioethanol stove fuel(same spec as the lab stuff)
vs
lab grade, workshop grade, purple meths etc
no contest on price, and no methanol(major bonus for making and using glazes) in the solvent
i would want to see it through a GLC before i put it in a cocktail, but as a solvent I'm not too bothered that i might go blind after a few mins with the airbrush
owt over 97 with no mention of "denaturing" etc is lab grade abs as far as i care for solvent purposes
having just done a mental stock check on chemical store, it is odd compared to shakenvac or fabreeze
among the odd things i have acquired recently are myrrh and new frankincense for use in the "great gums test"
i know which i prefer
shopping for shellac was quite educational about how to look. for such things the words technical grade reduce the price and improve the choice and quality a lot
ps shellac offered me a huge choice of nail varnish, most of which had never even met a beetle, been there, done that, i got quite good at multi layer water shading and glow in the dark dog claws
not what i needed for this project |
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Mistress Rose
Joined: 21 Jul 2011 Posts: 15932
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dpack
Joined: 02 Jul 2005 Posts: 46168 Location: yes
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gz
Joined: 23 Jan 2009 Posts: 8879 Location: Ayrshire, Scotland
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dpack
Joined: 02 Jul 2005 Posts: 46168 Location: yes
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dpack
Joined: 02 Jul 2005 Posts: 46168 Location: yes
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dpack
Joined: 02 Jul 2005 Posts: 46168 Location: yes
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Posted: Tue May 02, 23 5:59 pm Post subject: |
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2 gm dewaxed blond shellac
10 gm 97% "bioethanol"
gives a roughly 25% wt vol cut
very nice, it worked over quite delicate water and gum based paints without them moving around, it enhances colours and shiny bits
im rather pleased with it, i can mix enough for a week or two and reduce waste(the stuff does not keep more than a few months), it seems to have good properties and it is a fraction of the price of "artist's shellac varnish"
the gesso thing is a bit more urgent and the artists stuff works for my purpose, i am trying a similar product different firm for half the price
it takes quite a lot to give a deep, flexible, workable surface on decent paper
to make this stuff i would need to learn about different acrylic glues that could be used as the binder etc(old style grosso and sotile with bunny boiling, poison and few weeks prep, i can do, probably a bad idea )
for the mo gesso that does what i want it to is in the same basket as the right pigments
PS the shellac varnish works as a single well applied and feathered coat, in multiple layers, done properly, it would do french polishing or lacquer work very well |
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dpack
Joined: 02 Jul 2005 Posts: 46168 Location: yes
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dpack
Joined: 02 Jul 2005 Posts: 46168 Location: yes
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dpack
Joined: 02 Jul 2005 Posts: 46168 Location: yes
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dpack
Joined: 02 Jul 2005 Posts: 46168 Location: yes
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Mistress Rose
Joined: 21 Jul 2011 Posts: 15932
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dpack
Joined: 02 Jul 2005 Posts: 46168 Location: yes
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Posted: Sat Dec 30, 23 2:46 pm Post subject: |
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an update, the shellac at 30% wt wt in 97% abs ethanol works a treat in thin layers with mulberry paper to create a very strong and resilient multi layer composite
i have done a 5 layer reinforcing strip to both edges of the core, the result seems acceptable
it was done slowly between layers, 3 applications of shellac per layer
oddly surprising how the result is similar to carbon fibre resin composites
using silk as well as paper could be a very green way to make light strong things, i am sort of up for trying it in other ways, tis light and quick work, then wait and repeat, so very little effort is needed(at least for smallish stuff)
by trying to follow the basics of the oriental techniques, even a first try has produced a satisfactory and quite pretty result
in other arty news
the brush arrived, spose i need a page with myrrh in the right places on the gesso to give it a try. i need the words for that page, the opening image is done, the story bit not yet
i wonder if runic looks as cute as latin script
odin is perfect for monkish psychedelia, sketch work, words, script, font, layout and embellishments are still undecided
4 pages is quite a task
maybe i will do thor or freya next and let the words develop from a set of pictures
the ravens turned out well, wolf or puss are attractive options to try next |
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Mistress Rose
Joined: 21 Jul 2011 Posts: 15932
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