Comments on: Working out the amount of plaster needed to fill a cottle http://e2rceramics.com/2007/08/26/working-out-the-amount-of-plaster-needed-to-fill-a-cottle ceramics by emilka radlinska Thu, 03 Jul 2008 22:38:26 +0000 http://wordpress.org/?v=2.5.1 By: John Evans http://e2rceramics.com/2007/08/26/working-out-the-amount-of-plaster-needed-to-fill-a-cottle#comment-241 John Evans Mon, 18 Feb 2008 16:40:14 +0000 http://e2rceramics.com/wp/2007/08/26/working-out-the-amount-of-plaster-needed-to-fill-a-cottle/#comment-241 Thanks for this. Hadn't moulded for 3 years and had lost my notes. Nearly made the same mistake as Anne too!! so double thanks!! Thanks for this. Hadn’t moulded for 3 years and had lost my notes. Nearly made the same mistake as Anne too!! so double thanks!!

]]> By: Anne Murray http://e2rceramics.com/2007/08/26/working-out-the-amount-of-plaster-needed-to-fill-a-cottle#comment-11 Anne Murray Wed, 10 Oct 2007 09:11:19 +0000 http://e2rceramics.com/wp/2007/08/26/working-out-the-amount-of-plaster-needed-to-fill-a-cottle/#comment-11 Hi Emilka I hope your research is coming on, I've been reading your blog with interest. I'm back in the workshop and am also working in plaster. I'm a bit rusty so have started back with drop moulds and getting the plaster calculations accurate. I started using your calculations, and when my cottle only filled up half way, I realised that I'd been working with a cylinder cottle rather than a cube one so the calculation of volume was different. After a brief trip back onto the internet I got the calculation for the cylinder volume - V=lPir2 Volume = length x pi x r squared. All that time in a maths class came flooding back. Next time I managed to get the calculation correct and it does work like you say. I'll write it up in full on my blog http://themarkmaker.blogspot.com/ in the next few days. All the best Anne 3rd Level GSA BA Design Hi Emilka

I hope your research is coming on, I’ve been reading your blog with interest. I’m back in the workshop and am also working in plaster. I’m a bit rusty so have started back with drop moulds and getting the plaster calculations accurate. I started using your calculations, and when my cottle only filled up half way, I realised that I’d been working with a cylinder cottle rather than a cube one so the calculation of volume was different. After a brief trip back onto the internet I got the calculation for the cylinder volume - V=lPir2 Volume = length x pi x r squared. All that time in a maths class came flooding back. Next time I managed to get the calculation correct and it does work like you say.

I’ll write it up in full on my blog http://themarkmaker.blogspot.com/
in the next few days.

All the best

Anne
3rd Level GSA BA Design

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