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Hydrostone question

Materials, products, processes, suggestions and tips involving how sculpture is made.

Hydrostone question

Postby Barbatos » Mon May 08, 2017 5:03 am

This is a two part question.

1: I had some small air bubbles in this cast. I thought bondo would be a good filler for hydrostone, but found it actually has very poor adhesion, among other problems. Any ideas on what might be a good filler for minor air bubbles in a hydrstone casts would be appreciated.

2: In the process of sanding and washing this cast to prepare it for polychrome I noticed that hydrostone "sweats" these strange dust beads whenever it gets wet (see attached image). They are easily dusted away, and I will prime and color this cast with oils so it should be water tight in the end, but wondered if my mix ratios were off, or if this this is a common trait of hydrostone.

Image
http://pasteboard.co/3NWA8vSLH.jpg
Barbatos
 
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