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[Video] Large Scale Mold Making - Making the Negative "Tool"

Step 16Final Notes

Final Notes
Ask questions! During the entire process I was asking questions of our composites mentor (alternative methods, why certain things are done etc.). I know for certain I missed a few things (but I can't remember exactly). So, ask away - I'll answer to the best of by abilities and I can elaborate further into certain processes etc.

As we didn't need them -- You may consider adding a index keyways to your tool. It's as easy as attaching something like a golf ball cut in half to the base of the stand before you start applying wax, PVA etc. This creates a bump in the flange that will translate to both sides if you follow the method in this instructable.

Another way to make a key is to drill holes in the first completed tool flange before starting on the second - this creates impressions for the second tool to sit in.

Finally, it would be beneficial to add bolt holes for storage. Once both parts are cured - drill holes every 16 inches or so (especially on the corners) so you can add bolts for easy storage later. These tools will not fit inside each other.


How Long to Let the Whole Thin Cure?
As long as reasonably possible. The final bits of curing take some time to work their way out (Just like the hoover dam that is still curing today). Meanwhile, leaving the tools on the plug a few days will minimize the effects of shrinkage.
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Author:trebuchet03
I'm an Engineer in San Francisco. Mass producer. Former Intern. Rapid Prototyper. Sometimes, I post Instructables. My Favorite number: 42 By profession - I am an energy engineer. I count electrons p...
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