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| vtsteam:
--- Quote from: NormanV on October 04, 2013, 04:25:07 PM ---I am not even sure how much I will need, my biggest moulding box will be 30" x 12" x 8", what weight of sand will I need to fill that? --- End quote --- About 170 lbs dry if you'll be mixing in clay. If using pre-mixed greensand and with moisture, figure on 200 lbs. But you'd be well advised to have more on hand than will fill the flask. |
| NormanV:
Andrew, I had seen the John Winter website but unfortunately he does not list prices, come to that nor do Mansfield sand. I will give them both a ring on Monday. thank you for the info. Steve, thanks for the figures, 4 bags of 25kg will do it then. I live right next to a sandy beach, it is so tempting! Norman |
| awemawson:
When I used to travel around the country muchly for my job I called into John Winters several times to collect stuff - very friendly and helpful. But this meant that the carriage cost was zero (unless you count the wear and tear to the company car with several sack of sand in the boot :ddb: ) I seem to remember that the approach to their place is up a very steep hill - but then most of outlying Halifax is up a steep hill come to think about it !) If the sand on your beach is nice and fine why don't you consider the sodium silicate process. Dry sand, add up to 4% by weight of sodium silicate, mix well then pass CO2 through it. Sets nice and hard but permeable. It's total loss as far as the sand is concerned but then you have the beach ! JW stock sodium silicate. When I was last casting I mainly used silver sand and sodium silicate as it saves faffing about with collapsing moulds! Mind you the garden was starting to fill up with the detritus of knocked out moulds! |
| NormanV:
I suppose I won't know if it is any good unless I try it. There are dunes at the top of the beach where the sea doesn't reach so it shouldn't be so salty. I'll gat some sodium silicate and give it a try. Norman |
| DavidA:
Norman, This may be of interest to you. http://mistralni.co.uk/products/sodium-silicate-solution-q70 Dave. By the way, how did the first firing go ? Now the flue is abating I will be over to collect the bits next Saturday. |
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