When I lent my services to a collegue who was working on a film about 12 years ago, I was introduced to the world of cnc. I remember watching this huge machining centre milling out a slab of mdf and turning it into a fantastic set of gears. I knew that it would have taken me hours to achieve the same thing with traditional power tools. I decided then that I would invest in a cnc router for my own business Oxenham Design. At that time I could turn on a computer, but even to check email seemed like a crazy set of operations. I persevered and learned every piece of relevant software I could get my hands on. I am now fortunate enough to be using Vectric's ASPIRE software, and Techno cnc routers, which has helped us to create some amazing projects, both in part, or in full. I thought that this blog would be a great place to share "behind the scenes" adventures with the software, materials and equipment we use, as well as the projects we build.

Monday, 10 March 2014

A Christmas Horror Story!

Fedex picked up our 2 huge crates on Friday that are off to California. That left us to work on the crosier death weapon for the film A Christmas Horror Story.
I never had any intention to 3d cnc the Christmas Tree spike of pain at the top of the crosier. This was laser cut from 3/16" acrylic. This will get glued up and a 2 part mold cast. We'll cast this, and add it on after.
I added rubber feet, suspended into the silicone rubber, to act as locator keys for the two mold halves. This should allow the two mold halves to lock together, insuring proper alignment.
The crosier got multiple coats of primer, and sanded smooth. We made a simple mold box, and will only fill it half way. Once the first half cures, we'll pour the rest of it. This should give us our 2 part mold we need to cast this.
I also added suspended rubber feet on this part as well. Again, allowing us to key together the 2 halves. I'll cut in a pour spout at the top after the rubber hardens, and the part removed. It's hard to see in the image, but I glued a small section of 1/8" brass rod to connect the very bottom piece of scrollwork to the rest of the model. This should prevent any trapped air, which would result in a void in the casting. This will get cut off, and cleaned up on the final castings!
8)
JWO


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1 comment:

  1. Anonymous11 March 2014 at 09:26

    you are the best!
    you make it look easy, but we know its not.

    ReplyDelete

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