how do i go about casting this
Posted 17 February 2007 - 02:58 PM
Posted 17 February 2007 - 06:36 PM
I hope someone shows us how to cast a rim.
Posted 20 February 2007 - 10:44 AM
Posted 20 February 2007 - 12:31 PM
I can show you exactly how to cast that wheel. I will post some info and pictures later this afternoon.
that would be great
Posted 22 February 2007 - 12:13 PM
Posted 24 February 2007 - 01:09 AM
Posted 03 March 2007 - 07:10 PM
If you find that a certain area of the casting is prone to pinholes (bubbles in the resin), you can put a vent into the mold by pushing a piece of aluminum tubing through the rubber into that location of the casting, locating it on the backside or someplace it's easily cleaned up.
Posted 07 March 2007 - 08:37 AM
Dave has pretty much explained what needs to happen. Just make sure you use some type of mold to mold release.
Here are some pics of how one of my molds looks for a wheel. I had to make a two piece mold to cast this wheel. I wanted the same features you are looking for in this wheel. I don't have any pics of the mold making process but with Daves explanation and these pics, you should be able to see what needs to be done.
This is the two mold halves. You can see the pour hole and the area where the resin flows.
Here you can see the two halves placed together. The large hole is the pour hole, the smaller hole allows the mold to breathe as it fills with resin.
Resin poured, cured
Two halves seperated. You can see where the resin cured in the pour hole and you can also see the wheel that was created.
Trimmed wheel ready to prep for paint