The subject of cores has always been of interest to me so the groups' current thread makes me ask if there are any good books on the subject of core design and...
Sorry, meant to include this in my last post. I've never seen any mention of this so I was wondering if there are any major product design or manufacturing ...
Was curious to see if anyone has tried the following: In making small 2-part molds I often use Legos to build the mold box. I then embed half the master in a ...
I am trying to find the most applicable pourable product to make some one off automobile suspension bushings. Does anyone have some advice as to which product...
Tom, Sorry I don't have the answer you seek, but I'm glad you're asking the question. I just realized I could benefit from the answer as well. My Poweriser...
Bob, I've monkeyed around with clay substitutes but inevitably returned to old faithful. I agree that clay is awkward to work with, especially when removing it...
smooth-on.com had some resins that were supposed to be formulated for auto bushing material. I think it was one of those "task" resins but not sure. Ray K. ......
I sometimes heat my Chavant clay in a double boiler and pour it into an rtv mold ... when cooled I then refine the clay sculpture etc and produce the mold from...
I regularly heat my clay in the microwave to make it more pliable, but I have never heated to the extent of it becoming "pourable". I always figured that it...
Ray: Do be careful in heating the clay .. Chavant has some recommended max temperatures .. don't think you should boil it. I've heated it to about 170 degrees...
We use $20 deep fryers with temp controls for both our sculpting wax and our Chavant non-sulpher clay, they work great. Don't know what would happen with the...
Hi Bob, You are probably correct in assuming the expanding foam would stick like super glue to your pattern, other than that, the only real problem I see is...
Ok, what's a non-expanding foam? As far as I've seen foams are made BY expansion.... usually by a small amount of water boiling in them from reaction heat. ...
So why would you need a special clay injector? The wax injectors should work fine as long as the temp they work at can be set for what clay requires. Ted Quick...
Hi Ray Depending on how many of these handsets you intend to make, a possible solution would be to cast a wax core for the handpiece and spray the clear resin...
While it would work in some applications, the problem with the process you describe Mario is that it negates the capturing of any detail whatsoever on the...
You´re absolutely right. In that case no way around the core being inserted in an outer mold. I don´t want to sound pushy but do consider the options of...
I will certainly welcome all possibilites, since I am in unchartered waters an am really a relative newcomer to casting. I am just sorry that I didn't get into...
Actually the gap between core and mold was anything but thin if he's talking about the kind of handsets I think he is. The walls on those handsets made during...
Greetings, Thanks for all the great info you folks share here with us newbies and amateurs! I have been casting small polyurethane parts in silicone molds from...
Hello, I am a doll sculpter and about to make my first molds. I would be interested to hear feedback on what is best, glove molds, box molds?? Using plaster...
Ted, working on telephones is all I do. I have about 3000+ of the handsets you're talking about in stock. I was refurb'ing vintage and antique telephones WAY...
The basic problem with making a siliconme mold to cast a silicone part is that if you don't coat ALL of the mold surface with mold release it's possible to...
Robert, Try Polytek 71-10 platinum cure silicone. It has a fast set time but the viscosity is only 3500 CPS. I am not sure of the tensile but the tear...
I have used a 70 -80 shore A urethane rubber material for stiffer parts for this application and softer urethane rubber like a shore 40 -60 for softer parts. ...
I have used flexible foam, rigid foam and urethane resin for the application you have described with success as long as I do not have any negative draft. Peter...
IAAPA (International Association of Amusement Parks and Attractions) seems to have a number of manufacturers. It is held next year in Atlanta during the week...
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