Thursday, April 5, 2018

Rambling about Greensand

Allow me to ramble.   There are several variables associated with greensand.   Six people can make greensand from the very same ingreediants and come up with six different sands.     It gets even more complex when the ingrediants vary.   The ratios you seen on the net are a starting point.  Take the time to ram up test flasks while varying the sand, Eventually you will discover what works.  Then ram up your pattern and light the furance.

If you have the time watch olfoundryman and sandrammer ram up a flask.  Both of these dudes are way better than me and maybe most of us.

Sandrammer uses shallow layers and takes care to scratch the surface of each layer prior to adding the next.  Oldfoundryman puts a lot less effort into it with fewer layers not scratching and less ramming in general.(edited)
Sandrammers's techinque makes for a stronger mold and will work with larger flasks.   Oldfoundryman's works for the relatively small flasks he uses.  But largely they cast about the same sized parts in their vidoes.

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