Date: Fri, 07 Jul 2006 12:25:55 -0700 To: puptcrit-AT-lists.driftline.org From: Steve Axtell <steve-AT-axtell.com> Subject: Re: [Puptcrit] Molmaking question We make moles with little beady eyes and latex tails.. : ) Ax At 7/7/2006 09:21 AM, Mathieu René wrote: >Hi Mike. >Thanks for the answers, even if my question was a bit blurry. >I am reccording the urethane baking trick. It might come in handy. > > >The person says she uses rubber molds (I know, not very precise, but that's >what i got). >Her problem with the old molds that date abck when she was using silicone >release agent, is that her Creative paperclay (a superfine paper mache type) >gets "released from the mold too early in its drying stage, resulting in a >warped mold. > >Here is the info I got from her: > >"I've been experimenting with paper slip casting in rubber molds, and my new >molds which have never been treated hold the slip o so nice, and the older >ones I've used silicone on release the cast too early, making it wrinkle and >bubble from the lack of support as I add extra layers of slip." > > Thanks for any pointers! > > > > >Mathieu René Créaturiste >Marionnettes, Masques, Etcetera... >Puppets, Masks, Etcetera... >www.creaturiste.com >creaturiste-AT-magma.ca >(514) 274-8027 >----- Original Message ----- >From: "Mike Brose" <propworks-AT-juno.com> >To: <puptcrit-AT-lists.driftline.org> >Sent: Friday, July 07, 2006 9:55 AM >Subject: Re: [Puptcrit] Molmaking question > > > > Mathieu............ we first need to know what type of mold? Plaster? > > Urethane rubber? Latex rubber? Silicone RTV? And what type of bad results > > are they getting? Need more to go on to be able to give a good answer on > > this. > > > > Years ago, we used to use silicone based releases, but not anymore. We > > like the wax based releases much better (we are primarily using silicone > > molds however). We cast a lot of urethane resin in silicone RTV molds and > > over time there is a chemical migration from the urethane into the > > surface of the silicone molds which causes them to harden, get brittle > > over many castings and eventually pieces tear out of the mold. To slow > > that down, after 5-10 castings, we bake the molds (in a shop oven, not > > the home oven!) at 200 degrees F. for several hours to bake out the > > urethane residues. That helps tremendously. Between switching over to wax > > based release and baking out the molds, we have pretty much doubled the > > amount of pulls (castings) we can get out of one mold. > > > > > > Mike Brose > > www.puppetsandprops.com > > > > > > > > On Thu, 6 Jul 2006 17:51:55 -0400 =?Windows-1252?Q?Mathieu_René?= > > <creaturiste-AT-magma.ca> writes: > >> Hi all. > >> A collegue is wondering what to do. She has made molds in the apst > >> that used a silicone release agent. Thos old molds she still uses, > >> but because of residues of release agent, she gets bad results. > >> Is there a way (or ways) to clean silicone residues from a mold? > >> > >> Thankfully, her new molds don't use this kind of release agent > >> anymore. > >> > >> I wll not let any silicone lubricant or release agent enter my > >> studio! > >> > >> Mathieu René Créaturiste > > _______________________________________________ > > List address: puptcrit-AT-lists.driftline.org > > Admin interface: > > http://lists.driftline.org/listinfo.cgi/puptcrit-driftline.org > > Archives: http://www.driftline.org > > > >_______________________________________________ >List address: puptcrit-AT-lists.driftline.org >Admin interface: >http://lists.driftline.org/listinfo.cgi/puptcrit-driftline.org >Archives: http://www.driftline.org > > > >-- >No virus found in this incoming message. >Checked by AVG Free Edition. >Version: 7.1.394 / Virus Database: 268.9.10/383 - Release Date: 7/7/2006 Steve Axtell Axtell Expressions, Inc. Website - http://www.axtell.com New on DVD "AxTelevision"! - http://www.axtelevision.com International Performer's Directory - http://www.axtell.com/ipd.html Original contents =A9 2005 all rights reserved. _______________________________________________ List address: puptcrit-AT-lists.driftline.org Admin interface: http://lists.driftline.org/listinfo.cgi/puptcrit-driftline.org Archives: http://www.driftline.org
Display software: ArchTracker © Malgosia Askanas, 2000-2005