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5K views 34 replies 16 participants last post by  J-Man 
#1 ·
This is my pneumatic version of a Skelly Coffin Groundbreaker. It's a work in progress, static portion is complete, still have to do the controls and audio.
Top of the coffin is 42", the top of the skelly's head is at 3 feet. He's mounted to a 4-bar linkage that when triggered, he jumps out and up to 6 feet to the top of his head. He only comes forward enough to clear the coffin so you can literally be standing about a foot in front of the coffin and he ends up right in your face. I'll post a video when he's finished, can't wait to unleash this one.
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#26 ·
You can download the zip files here:
http://www.boopack.com/software.html
Click the link: FourBarAll.zip
I have to warn you though, there's no instructions on how to use the program and it's not user friendly at all. I just play around with it until I get a setup that fits my application. I also used that program to design the linkage for the Scarecrow I did last year.
 
#27 ·
Hey thanks for compliments. This was totally my own design so there's no tutorial out there. There are so many elements of this prop where the dimensions are super critical, I mean down to a 16th of an inch. For me to write up detailed plans would require a serious chunk of my time and even then, if it's built to specs there's a pretty good chance that something will be off enough to cause problems. For those reasons it's doubtful that I'll do a tutorial.
 
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