Plastic parts and soft molds question

Not knowing anything about plastics, does your DesignNotes Proprietary Molding Kit allow me to make, say, a hard piece of plastic? Is it particularly heavy when it sets? Whats the difference between "soft molds" and "plastic parts"?

Thanks!
Evan

Dear Evan,

The molding kit allows you to make silicone molds (soft molds) around a master part. This soft mold (know as soft as it is pliable and flexible) is then used to contain a pourable polyurethane plastic (included in the kit). The polyurethane is comparable with some electronic cases and other medium strength plastics. Its density is comparable with other modern plastics, and is not particularily 'heavy'. I hope this helps, please feel free to ask further questions.

Best regards,

Joe
Customer Service
DesignNotes.com

Customer Service wrote:

Dear Evan,

The molding kit allows you to make silicone molds (soft molds) around a master part. This soft mold (know as soft as it is pliable and flexible) is then used to contain a pourable polyurethane plastic (included in the kit). The polyurethane is comparable with some electronic cases and other medium strength plastics. Its density is comparable with other modern plastics, and is not particularily 'heavy'. I hope this helps, please feel free to ask further questions.

Best regards,

Joe
Customer Service
DesignNotes.com

.

Joe,

Thanks for the response. I might as well come right out and ask it since Im not entirely comfortable with this field: I need to make a part about the width, height and length of a scissor blade, but I need it to be lightweight and generally (but not entirely) sturdy. I originally had planned to make this piece metal, but once I saw your ad in ID mag, I thought the truth is that this piece could be done in plastic as well.

So, based on the information above, do you think this would be possible to make this piece using the above mentioned proprietary kit you sell? Or is your kit for something really very different and Im just not catching on Smile

[sorry, Im a new solo inventor with no engineering or science background so this is all new to me]

Thanks,
Evan

Dear Evan,

I apologize for the delayed response to your posting. Most plastics are not necessarily ideal candidates to replace metal if you're looking for similar strength properties. However, if you're not overly concerned about strength, and weight is more important, than certainly plastic is a great choice. Our molding kit will allow you to make your part out of polyurethane plastic. What you'll need to have is a mock-up of your part made from wood, wax, clay, or other easily shapable material that you can use as a 'master' part. You would then cast our silicone mold material around that part. Once the silicone is cured, you would remove your 'master' part, and pour our polyurethane plastic into the resulting cavity. Once cured, you will have a solid polyurethane casting of your 'master' part.

Best regards,
Joe