Molding sand grain size
Molding sand grain size
I was curious about the mesh size of my sand so I took a pinch and squeezed it in my micrometer. Several tries came out with the same 0.008" so I looked it up and that is 70 mesh. What are you guys getting on grain size?
I'd rather laugh with the sinners than cry with the saints the sinners are much more fun...
Muller
Muller
Re: Molding sand grain size
Wow thats about .2 mm, my play sand is about .8mm and under, thats what the supplier to the hardware store were I get it told me. I'm starting to add a finer sand from a landscape supplier to my mix, I'll take some to work tonight and see if i can measure it, my micrometer has a round anvil so it would be damn difficult to measure
Mike
Mike
When life gets tough, remember: You were the strongest sperm
Re: Molding sand grain size
I use 70 mesh olivine sand. I get it from a local foundry. I asked if I could buy a few buckets full, the guy said you bring the buckets you can have the sand free, he even gave me a tour Great guy!
Re: Molding sand grain size
I measured mine at work last night and I got .5mm on my play sand and the new stuff .3mm
When life gets tough, remember: You were the strongest sperm
Re: Molding sand grain size
I think I might go and measure mine!
Mine is 0.35mm I checked it 3 times just to be sure
Mine is 0.35mm I checked it 3 times just to be sure
I like to build "Stuff" using Stuff that costs Stuff All!
-
- Posts: 29
- Joined: Sun May 29, 2011 6:13 pm
- Location: Fort Collins, Colorado
Re: Molding sand grain size
What are these millimeters you speak of! That's not a real measuring system!
Just kidding.
Here's an even better site with info on this mysterious "Mesh" measuring system:
http://en.wikipedia.org/wiki/Mesh_%28scale%29
Just kidding.
Here's an even better site with info on this mysterious "Mesh" measuring system:
http://en.wikipedia.org/wiki/Mesh_%28scale%29
-David
I cut it off three times! And it's still too short!
I cut it off three times! And it's still too short!
Re: Molding sand grain size
Just saw the technical specs of my greensand recently: Average grain size: 0,09mm. Wow! Petrobond Goodbye.
Re: Molding sand grain size
I did not think such a small grain size was a good thing for greensand because of the need to vent steam through the sand. That is 0.003" which is nearly 1/3 rd the size I measured in mine. If it works though I say go for it, I am sure someone has figured out how to get good binding with very little water.
I'd rather laugh with the sinners than cry with the saints the sinners are much more fun...
Muller
Muller