Re: Lost Foam casting inquiry


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Posted by bruce paul fink on October 27, 1999 at 19:52:25:

In Reply to: Lost Foam casting inquiry posted by Sander Rosenberg on October 27, 1999 at 19:43:21:


Thank you for the JPG's and views.

I wish I could help you better but really can not tell much from the photos.

It is usually during the initial breakout that the best casting results can be examined and that is in part due to the coloration or discoloration of the sand,

the flow paths through the sprues or vents,

or the various parts that we normally then cut off and then try to work out to a fine finished form.

Beautiful forms though, and hope you enjoyed doing it as much as those in the know and others that have no idea may hopefully also glean from them.

That is in part an impossibility, at least I always get a lot more enjoyment from my involvement's than I could ever imagine others could. Has to do with life on the physical plane but that's another avenue.

The run lines in the form could be in part from sand washing into the mold, but that would be noticed in the breakout if the sand was still present.

Gases from improper fuel/air mixtures can also do the dirty deed and that is noticeable if there is no sand in the openings and there seems to be a degree of porosity in the inner metal as well (maybe also noticeable in the areas of the cut off sprues and vents).

Check out reducing vs. oxidizing flames as once the metal is molten it becomes another animal and really sucks when it can .

If there was any dross or impurities in the pouring the rough surface of the metal could also be caused by that.

Now for a fix.

I do not find the surface to be objectionable in form, just in a disappointment of the ultimate casting goals.

Lets face it. If one wants perfection and is able to attain it if follows that one moves on to other degrees of accomplishment. It is the law of non stagnation (actually many in the world will not follow this but I assume artists will tend to find it a norm... that's why we become artists and not specialists of repetition... this should cause an artmetal thread of sorts...).

In my younger trials (and I'm not beyond it yet but not getting the opportunity as often) when a casting did less than desired I would try some experiments on it and do some hey-what-the-hell-I-got-nothing-to-loose experimentation.

In this case you might try some EXTREME patination with some

1. wild coloration.

2. pit filling epoxy colored into marbleized fillers

3. solid opaque fillers that can be buffed or resanded and polished down to a final positive end... like

metal spraying copper or other contrasting metals or fillers into the pores and then buffing them up...

4. or get crazy and wild (no need to wait for the Saturday nite Frederick's of Hollywood Party... let it hang out now on the current sculpture thing.)

Get the point?

You have a very nice set of forms,

had to be fun,

hope you like them alot but do feel free to like them even more and get open to them.

Now I must say an apology since I don't know if you really know much about me but I'm an old fart that that loves life to the fullest and has done approximately 870 (have to check the records to make it official) sculptures so far and most have been done with the freedom of my whimsy since that is more life blood to me than dollars or successes (can live on beans and rice as often as necessary with no guilt's or disappointments).

So please do not be offended if this strikes you odd, but I really am thankful you sent the JPG's and hope this may also help to spur you on to even more fine accomplishments and realizations.

Hey, it's a rose garden out here.



PS. It is one of the beauties of elder age, you say what you feel and wish the world a blessing and no longer need to make everyone a friend.... though that many times also follows as a result.

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