when using. Old clothes and gloves are a must as removing
dried Great Stuff from skin is nearly impossible! If you’re
using a character that will be clothed, assembly will be
I mounted the cylinder vertically and connected it to
the threaded rod which allowed my character to rise from
his seat, deliver his speech, and sit back down.
I have listed several more of my favorite suppliers in the
Another source for parts is eBay. If you do your
research, there can be some outstanding deals to be found
(although they seem to be harder and harder to come by). I
have managed to purchase an array of used components in
this manner with a lot of life remaining in them.
A Zombie Comes to Life!
I originally designed the mechanism for the Big Red
build (from last month) using pneumatics, but was unhappy
with the restriction of only having in and out control.
Although the mechanism was not the optimum solution for
that project, I could easily repurpose it for my lunging
zombie (Figure 8).
This mechanism consists of seven cylinders providing
the body movements, and one to slide him in and out. I
wanted to keep the design to a maximum of eight cylinders
as I could then use a single programming board and two
four-valve manifolds. The addition of any more cylinders
would have greatly increased the complexity of the project
without adding much to the performance of the
The cylinders were attached using custom fabricated
parts (Figure 9, Figure 10, and Figure 11). Just to be
clear, these were not professionally made but cobbled
SERVO 11.2015 51
Figure 8. Pneumatic mechanism and its original installation.
Figure 9. Right shoulder assembly.
Automation Direct — http://tinyurl.com/yft5tmf
Monster Guts — http://tinyurl.com/npjgcsm
Helpful Pneumatic links list — http://tinyurl.com/otjx6v4
Fright Props tutorials — http://tinyurl.com/pwcctjg
My website — www.halstaff.com
My You Tube channel — http://tinyurl.com/nma2doj