Egg Tempera Forums

Go Back   Egg Tempera Forums > The Forums > The Forum for Tempera Painting Issues

The Forum for Tempera Painting Issues Sharing the knowledge and experience of fellow tempera painters.

Reply
 
Thread Tools Display Modes
  #1  
Old 25-03-09, 03:01 PM
Nina Nina is offline
Junior Member
 
Join Date: Mar 2009
Location: UK
Posts: 5
Question a few questions from a newbie to egg tempera!

Hello everyone! I am new to egg tempera and am hoping you might be able to help me with a few questions!
1. Do you sand and polish your gesso surface so it loses it's absorbancy and becomes hard and ivory-like in texture before you begin your painting with egg tempera or do you leave the surface porus and matt in texture?
2. How long do you need to leave the paint to dry/cure before buffing it lightly?
3. What do you use to buff the painting with?
4. how long does it take for any cracks to appear if you have mistakenly used a mixture that is too rich in egg yolk?
Thanks in advance for any info!!!
Reply With Quote
  #2  
Old 26-03-09, 01:40 PM
cmunisso's Avatar
cmunisso cmunisso is offline
Italian painter
 
Join Date: Mar 2008
Location: Roma - Italia
Posts: 34
Default

Very good questions for a newbie !

I try to reply....

1) I sand my gesso because I like paint on a ivory-like surface, but this not loses it's absorbancy, there are other ways to decrease the absorbancy.

2) I don't buff the surface of the painting, eventually I use to varnish it, and the time to dry is at least 6 months.

3) see above...

4) I put a great attention to avoid mistakes (....LOL...) and I don't have crack problems.
I use a traditional way to paint as a good gesso ground, many thin layers of paint, an exact quantity of tempera. This avoids any crack problem.

Care-patience-accuracy is a must for a good tempera painter, the experience is a result of this.
Reply With Quote
  #3  
Old 26-03-09, 09:45 PM
Koo Schadler's Avatar
Koo Schadler Koo Schadler is offline
Tempera Painter
 
Join Date: Dec 2003
Location: Alstead, NH & Zirahuen, Mexico
Posts: 299
Default

Hello Newbie, Welcome to tempera!

The questions about buffing have been discussed pretty well in the recent postings on "Acid" by Steven in the forum.

Regarding the absorbency of your true gesso ground, that is determined to a large degree by the ingredients of the gesso. Specifically, the percentage of rabbit skin glue in our gesso. The more glue you have relative to your inert white substance (i.e. your chalk or gypsum, whichever one you choose to make your gesso - both work), the harder your surface will be (and less absorbent); and conversely, the less glue relative to your i.w.s., the more absorbent. Also, you can add some percentage of titanium white (up to about 10%) to your i.w.s. to increase the reflective properties of the ground, and adding titanium white will also soften the ground.

Whether you want a perfectly smooth (like ivory) or rougher ground is mostly a matter of personal preference. Because so many et artists do refined, detailed work they generally like to get it pretty smooth - but you could certainly work on a rough ground, and even scratch and texture it to some degree.

Last edited by Koo Schadler; 28-03-09 at 07:11 PM.
Reply With Quote
  #4  
Old 26-03-09, 09:48 PM
Koo Schadler's Avatar
Koo Schadler Koo Schadler is offline
Tempera Painter
 
Join Date: Dec 2003
Location: Alstead, NH & Zirahuen, Mexico
Posts: 299
Default

Mmm... I should add that at some point too much rabbit skin glue in your ground, i.e. too hard a gesso, will lead to cracking; and too soft a ground (not enough glue) will result in a crumbly, unstable gesso. When you mix your glue to water, the ratio can fall somewhere between 1 part glue to 11 parts water (a very hard gesso) up to, perhaps, 1 part glue to 24 parts water (a very soft gesso). Those are approximations - the most common ratio is probably 1 part glue to 16 parts water.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 07:49 PM.
Design modifications, graphics and CSS by RobM
June 2010



Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.