Re: [rp-ml] Patching Silicone RTV Molds

Thin "Superglue" works for a quick fix if it does not have any release agent on it. We have gotten as many a 20 more casting out of the mold using this method. Great care has to be taken and the area has to be released well each time before casting. This works for both tin and platinum silicones.

Steve Hund
Paradigm Development Group
1435 Elmhurst Rd.
Elk Grove Village, IL 60007
TEL: 847-545-9600
FAX: 847-545-9604
WEB: www.pardev.com

  ----- Original Message -----
  From: Lino P. Stavole
  To: ChathamRes@aol.com ; rp-ml@rapid.lpt.fi
  Sent: Tuesday, December 02, 2008 4:06 PM
  Subject: RE: [rp-ml] Patching Silicone RTV Molds

  I've had some success patching silicone molds and castings using either shin-etsu brand caulking or any other 100% silicone. Clear in my opinion is best. You can use a small bit of Naptha and a fine paint brush to wipe the excess away. Do not use too much as it will temporarily swell your mold. You can use 99% alcohol in lieu of the naptha but I feel like this leaves a small film of the silicon on your piece.

  Lino Stavole

  The Creature Company

  661.433.5283

  www.creaturecompany.com

  mail@creaturecompany.com

  ==============================

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  From: owner-rp-ml@rapid.lpt.fi [mailto:owner-rp-ml@rapid.lpt.fi] On Behalf Of ChathamRes@aol.com
  Sent: Tuesday, December 02, 2008 10:21 AM
  To: rp-ml@rapid.lpt.fi
  Subject: [rp-ml] Patching Silicone RTV Molds

  Has anyone on the list had any good luck with patching an existing RTV mold? If so, how did you accomplish this repair?

  Doug

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