Szymon Posted July 19, 2018 Report Share Posted July 19, 2018 screen from my instagram this is the result Link to comment Share on other sites More sharing options...
Peter K-G Posted July 19, 2018 Author Report Share Posted July 19, 2018 On 11/10/2017 at 6:36 PM, Peter K-G said: Faded Madder pigments! The images aren't too comparable because the first image (2013) is taken with another warmer camera, but almost all madder (Kremer powder) has faded, the varnish hasn't change, still glossy and good. A little bit of research (lot of information/thinking from Roger Hargrave's Double bass document) Madder pigment powder - Not good "Normal" Artist grade tube paint - Not good Permanent Alizarin Crimson - Yes! https://www.justpaint.org/alizarin-crimson-now-you-see-it/ Link to comment Share on other sites More sharing options...
Peter K-G Posted July 19, 2018 Author Report Share Posted July 19, 2018 1 hour ago, Szymon said: screen from my instagram this is the result Thanks for posting Szymon Really Nice, that back is on fire! Link to comment Share on other sites More sharing options...
Peter K-G Posted July 20, 2018 Author Report Share Posted July 20, 2018 18 hours ago, Peter K-G said: Final two thin coats with no color (1 really thin ground coat, 2 colored with Permanent Alizarin Crimson pr177, 2 top coats with no color) It is slightly less red in reality and as usual it's impossible to capture the real result. What i like about this test is that it is varying a lot between golden brown and golden red/brown and the reflection is much more exciting than what I have achieved so far. In a certain angle the flames almost disappear and it looks kind of dull/uninteresting/almost messy and not beautiful at all. Changing the angle just a little bit and the flames pops out beautifully. When a shadow is cast it's really dark Link to comment Share on other sites More sharing options...
Peter K-G Posted August 11, 2018 Author Report Share Posted August 11, 2018 Optimizing grounding, no varnish yet, scraped off a part, to see comparison where it started from: Link to comment Share on other sites More sharing options...
Szymon Posted August 11, 2018 Report Share Posted August 11, 2018 Hi Peter. This ground is from lime and curd? In what proportions? Link to comment Share on other sites More sharing options...
Quadibloc Posted August 12, 2018 Report Share Posted August 12, 2018 On 7/19/2018 at 12:22 PM, Peter K-G said: Permanent Alizarin Crimson - Yes! https://www.justpaint.org/alizarin-crimson-now-you-see-it/ I am glad to hear that there is a good alternative to using Vermilion, which contains a mercury compound requiring care in handling. However, the link you gave seems to recommend an anthraquinone pigment as a better choice. Of course, a super-high lightfastness rating may not be necessary for something that is mainly kept indoors. Link to comment Share on other sites More sharing options...
Peter K-G Posted August 12, 2018 Author Report Share Posted August 12, 2018 6 hours ago, Quadibloc said: I am glad to hear that there is a good alternative to using Vermilion, which contains a mercury compound requiring care in handling. However, the link you gave seems to recommend an anthraquinone pigment as a better choice. Of course, a super-high lightfastness rating may not be necessary for something that is mainly kept indoors. There is endless possibilities, so everyone can find a solution that he/she likes. Myself I'm developing in the directilon Ingredients should be well known, cheap and non toxic/edible and as few as possible. Link to comment Share on other sites More sharing options...
Peter K-G Posted August 12, 2018 Author Report Share Posted August 12, 2018 14 hours ago, Szymon said: Hi Peter. This ground is from lime and curd? In what proportions? Not measured exactly but I think about 85/15 Quark/lime and into that ~3-5% linseed oil. The wood was prepared with strong yello label tea and one week tanning. Link to comment Share on other sites More sharing options...
Peter K-G Posted August 15, 2018 Author Report Share Posted August 15, 2018 So it's about time to start making a new violin and end this varnish testing, that I have been doing all summer. It has been interesting and also rewarding. I have learned a lot about how to achieve what I want. It involves a lot of things from what type of wood you start with and how the grounding color is done. On the previous ground: One thin sealing layer, one layer with madder pigments mulled into varnish, two thin top coat layers. All with the same varnish. What I like most is the reflection and shimmer in different light directions when using pigments like this, it's also very transparent. Link to comment Share on other sites More sharing options...
Nick Allen Posted August 15, 2018 Report Share Posted August 15, 2018 While technically a ground, it just looks like a finished varnish job. Link to comment Share on other sites More sharing options...
carl1961 Posted August 15, 2018 Report Share Posted August 15, 2018 Awesome work Peter, Nice color too, is the madder pigments mulled into varnish Layer rubbed on or brushed? Link to comment Share on other sites More sharing options...
Peter K-G Posted August 17, 2018 Author Report Share Posted August 17, 2018 On 8/11/2018 at 6:43 PM, Peter K-G said: Optimizing grounding, no varnish yet, scraped off a part, to see comparison where it started from: On 8/15/2018 at 10:54 PM, Nick Allen said: While technically a ground, it just looks like a finished varnish job. Here is another image of the ground taken closer and in bright light, as you can see it looks (and feels) like wood, only colored from the chemical reaction when rubbing it on. Link to comment Share on other sites More sharing options...
Peter K-G Posted August 17, 2018 Author Report Share Posted August 17, 2018 On 8/15/2018 at 10:54 PM, carl1961 said: Awesome work Peter, Nice color too, is the madder pigments mulled into varnish Layer rubbed on or brushed? I use only may hands, no brushes Link to comment Share on other sites More sharing options...
Nick Allen Posted August 17, 2018 Report Share Posted August 17, 2018 4 hours ago, Peter K-G said: Here is another image of the ground taken closer and in bright light, as you can see it looks (and feels) like wood, only colored from the chemical reaction when rubbing it on. Ah. Perhaps I was looking the finished varnish to begin with . Looks nice and toasty. Link to comment Share on other sites More sharing options...
Peter K-G Posted August 21, 2018 Author Report Share Posted August 21, 2018 http://www.thestradsound.com/ongoing/ribswithajapanese Link to comment Share on other sites More sharing options...
Fjodor Posted September 1, 2018 Report Share Posted September 1, 2018 On 8/17/2018 at 12:41 PM, Peter K-G said: Here is another image of the ground taken closer and in bright light, as you can see it looks (and feels) like wood, only colored from the chemical reaction when rubbing it on. Looks good. I have never got this dark ground with the quark/lime. Do you think the reaction is 'enhanced' primarily from the tea treatment or the sun tanning? Link to comment Share on other sites More sharing options...
Peter K-G Posted September 2, 2018 Author Report Share Posted September 2, 2018 On 1. syyskuuta 2018 at 9:21 PM, Fjodor said: Looks good. I have never got this dark ground with the quark/lime. Do you think the reaction is 'enhanced' primarily from the tea treatment or the sun tanning? It's both, because only tea and short UV time doesn't make that strong reaction. I also tried white wine, that worked too but not as much. On the other hand a very tanned piece of wood or old dark yellow wood gives the same darkness level, but more golden yellow than this golden brown. The piece was exposed to direct sunlight for 6 days after the tea treatment. Link to comment Share on other sites More sharing options...
Peter K-G Posted June 17, 2019 Author Report Share Posted June 17, 2019 Still no time to make violins... but thinking of violins and varnish, in the middle of the night I can (our balcony is facing south), while Näcken spelar fiol Link to comment Share on other sites More sharing options...
Peter K-G Posted August 1, 2019 Author Report Share Posted August 1, 2019 Time for varnish cooking http://www.thestradsound.com/ongoing/varnishcookingtime-1 Link to comment Share on other sites More sharing options...
Peter K-G Posted August 1, 2019 Author Report Share Posted August 1, 2019 Ready Link to comment Share on other sites More sharing options...
Peter K-G Posted August 7, 2019 Author Report Share Posted August 7, 2019 Who needs pigments (I will use pigments to tint to more golden brown or red) This time I got it some degrees even darker, it can't be used without proper sealing and maybe a lighter varnish as first layer. Link to comment Share on other sites More sharing options...
Nick Allen Posted August 8, 2019 Report Share Posted August 8, 2019 Looks super nice! How many coats is that by the way? Link to comment Share on other sites More sharing options...
Peter K-G Posted August 8, 2019 Author Report Share Posted August 8, 2019 5 hours ago, Nick Allen said: Looks super nice! How many coats is that by the way? Hard to tell how many coats it would correspond to when varnishing a violin. This is only a first test, smeared on as much as the wood could take in one coat, diluted with ~50% turp. As you can see the flames are totally burned and it would not work good on bare wood. It needs a very good sealing ground. Link to comment Share on other sites More sharing options...
Peter K-G Posted August 8, 2019 Author Report Share Posted August 8, 2019 Here is an image from another angle, where how thick it is kind of shows. You can see that it has penetrated into the wood. This is why I'm totally against "varnish like" grounds, it does the same with light varnish but you don't see it Link to comment Share on other sites More sharing options...
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