Has Any One Ever Tried Making There Own Custom Injection Molds With Silicone?

[andy1976]

I was thinking a red high temp silicone might make a nice injection mold for plastics. Just wondering if anyone has tried.

[Baitjunkys]

I was thinking a red high temp silicone might make a nice injection mold for plastics. Just wondering if anyione has tried.

imo you need to use rtv and add a solid backer to it. Pop is far cheaper and if you add a solid spine and make it a bit thicker it will be tuff as nails. Im doing one now. Ill add some pics in a week or so start to finish.

[andy1976]

Thanks I was thinking a more rigid silicone would be good.

[Baitjunkys]

Anything 2 part. Ive seen a guy make a mold with a caulk gun. Hard to capture fine details. Something that starts really thin is best.

[djs]

Yes I use smooth on mold star 30 to make swimbaits.

Make sure you vent the mold as needed.

http://www.tackleunderground.com/community/index.php?/gallery/image/10921-line-through-swimbaits/

http://www.tackleunderground.com/community/index.php?/gallery/image/9905-top-hook-swimbait/

Edited August 25, 2013 by djs

[andy1976]

Those look nice. Do you have a picture if the mold?

[bass100]

I use alumilite's high strength 2 silicone and it makes injection molds just fine.  You don't need to add a backer to the mold.  When you clamp them together that is when you use a backer on each side of the mold (like wood or a stiff plastic).