[ArtistForum]

Whether you are a serious artist or you simply pursue art as a hobby, learning how to properly stretch a canvas is an important skill. If you learn how to stretch your own canvas you will no longer be limited by the sizes or dimensions readily available online and in art supply stores – you will be able to create custom canvases that are suited to your individual projects. Step-by-Step Guide for Stretching Perfect Canvas Every Time

Read more here:
http://www.artistforum.com/articles/step-by-step-guide-for-stretching-perfect-canvas-every-time/

 

[booz]

Gesso is carcinogenic.
It will cause lung cancer.
NEVER SAND GESSO unless you wear a high-quality respirator
(not a dust mask). And work in a well-ventilated room, where other
artists are not working (unless you don't care if you harm their lungs).
Gesso contains formaldehyde and ammonia.
It should be used only in a well-ventilated area, and
a high quality respirator should be worn when using.

 

[just]

Gesso is a white paint mixture consisting of a binder mixed with chalk, gypsum, pigment, or any combination of these.