Sunday, May 28, 2006

Casting your own plastic gears

Have you ever been in one of those situations where you have a plastic part and you need to make a copy of it? For example, I have a toy that contains a plastic gear that is trashed (several teeth broken off). The toy contains another gear that is identical and is in good shape. How do you make a copy of the good gear so you can replace the bad gear?

The answer is: Make a silicone rubber mold of the good gear, and then cast a copy of it using urethane resin.

Here's a nice set of videos that shows you the entire process:

Casting plastic parts with silicone molds

Or you could possibly order one from
Wow, I have done any casting in many years, this is good information to have handy.

>Or you could possibly order one

Yea sure, if you're willing to
purchase about 5000 minimum parts
to get a price of about $3 for
each part, for a total of $15,000+!

No thanks, I'll cast my own parts,
Thanks, I had a plastic gear strip in an expensive laser color laser printer and they want $200 to replace the entire part. Now I can make my own, and "stick it to the man".
Thank you for sharing to us.there are many person searching about that now they will find enough resources by your post.I would like to join your blog anyway so please continue sharing with us
Thank you for sharing
Nice and useful information.. thanks for sharing..
I need some casting plastic gears. please contact me @
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