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Material and software question

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I know I haven't posted in a very long time, but I have had a lot of things going on. I'm not even sure this is where I should be posting this. Anyway, I am in the process of building several props. Some of them call for Great Stuff, but as far as I know once you open the can of Great Stuff, you eiother have to use it all up or wastes what hasn't been used. Does anyone know a way around this? I hate spending what little money I have to waste 75% of a can. I was hoping someone knew a way to maybe seal up the can so it can be reused later on.

My other question is about software. I am trying to design a motorized Cellar Dweller prop where the doors thump and jiggle as if something is trying to escape, then a short pause, then the doors burst open and a zombie shoots out. For this I need to build a cam. I think I can do it with a single wiper motor and a cam. I was wondering if anyone knows of a CAD program that I can use for this. Cheap is good, free is better. I look into a bunch of CAD programs, but for one they are too expensive, and they also have many more features than I need. I just need something I can use to draw the shape of the cam (which I will cut from plywood), see how the action will work, and then (hopefully) print out the cam shape so I can cut it out with my jigsaw. Thanks :D
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· Obssessed Haunter
3,029 Posts
I reuse the great stuff can too.... but I just cut the end of the nozzle off. The great stuff hardens on the end, so just cut it off shorter and your good to go. I havent trid this for more than 3 time use... so I don't know how many times you can get by with this... Also, when done.... turn the can upside down and spray the great stuff... air will come out and clean the nozzle. Thats works some too.
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