Switch Handle Pictures

[Dwight K. Elvey]

>From: "vrs" <vrs at msn.com>
>
>From: "Dwight K. Elvey" <dwight.elvey at amd.com>
>>  This is great. What are you using to make the molds?
>
>Well, I went into the local TAP Plastics, described what I wanted to do to
>the nice saleslady, and ended up with these products:
>
>**Mold Making**
>TAP Silicone RTV System, Side A and Side B.  Side B comes in a couple of
>color coded versions.  I chose "TAP Silicone RTV Catalyst GREEN", which has
>a 1 hour working time, and a 24 hour cure.  This stuff is easy to work with,
>and hardens to a rubbery consistency, very much what you want for
>mold-making.  It is white until you mix in the catalyst, which dyes it
>green.
>
>**Casting**
>Quick Cast TAP Casting Resin, Side A and Side B.  This stuff hardens into a
>stiff plastic, perfect for switch handles :-).  Side A and Side B are clear,
>but the result will be white after it cures.  This color change makes it
>more difficult to predict the effect of the colorants.  This stuff has a
>very short working time -- a few minutes.  It is recommended to remove the
>parts from the mold in an hour (don't know why; some kind of chemical
>reaction with the mold is predicted, but I've never seen it).
>
>**Colorant**
>TAP Premium Pigment, in yellow, brown, red, and blue.  These are added in
>small quantities to Side B of the resin, before side A is added.  Only a
>very small amount of the pigment will actually stir into side B (most of the
>pigment just lays there, no matter how much you stir.)
>
>Hope that helps :-).  More later...
>
>    Vince

Hi Vince
 Someone told me that it was a good idea to use
PAM ( cooking spray ) as a mold release. This may help
with issues of leaving it in the mold too long.
Dwight