well chalk is a white lime stone and limestone is sedimentry
The word fresco ("fresh") involves working with fresh colored chalk (a kind of cement or plaster). It's quite a difficult technique, because you paint and plaster at the same time. Later, fresco secco, a paint made of caseine and putty, was developed to put on a dry plaster wall.
Keene's cement it is a gypsum based plaster material that was originally invented somewhere in the 1800's by a man named Richard Keene. It is a quick setting plaster that usually requires a retarder or some kind of plasticizer to make it smooth enough to spread on a wall.
There are no metals in drywall or plaster.
Any kind of cement mixer will work for laying a foundation. What's more important is the kind of cement you choose to use.
Chalk doesn't react with pure water.
they need white chalk or any kind of regular chalk not like 3 d or colored chalk
chemicals
it depends on which kind of cement it is
This wall mount is not designed for plaster mounting,stud mounting is required.
There is actually a device that is kind of like a fertilizer dispenser for plants, that drops chalk as you move.
The white bag is full of chalk for better grip with the ball!
"I think vinegar is supposed to work.Lawren1The CRC Handbook of Chemistry and Physics (65th ed. Special:Booksources) lists plaster of Paris (calcium sulphate half-hydrate, CaS04.1/2H2O) as soluble in acid, ammonium salts, sodium thiosulphate (Na2S2O3) and glycerin."I am so surprised that so many people on so many forums, obviously don't have a clue about the chemistry of plaster of Paris. I read in so many places things like "uh, try some kind of acid..."So I have a lot of concentrated chemicals on hand and did lots of experiments with all kinds of acids, both dilute and concentrate, under many conditions and determined that none of my dozen or so acids dissolve Plaster of Paris in any way, but sometimes make it harder.The chemicals which dissolved plaster of Paris are on the basic end of the PH scale, not acid. I first had some success with potassium cyanide, but what really worked better than anything is Sodium Bicarbonate. Makes sense. The sodium in baking soda hooks up with sulfur in the plaster, and the carbon hooks up with the calcium in the plaster.TO BEST DISSOLVE PLASTER OF PARIS PLACE IT IN WARM WATER WITH LOTS OF BAKING SODA.Don't use any acids or it will only defeat the process.Now what really amazes me is that the answer is so simple and safe, and surely some people must know it, but it apparently cannot be found on the internet, until now.Or you can chisel it away because it is soft enough to do so.