By Jones - 1/12/2019 2:04:48 PM
For us newcomers that doesn't have all the equipment in the world.
How do you go about sealing a fairly complicated 3D printed plug, to make a mold for resin infusion.
I am looking to use the uni-mold system but I don't have the equipment to use a spray gun and 2k primer to seal the 3D printed mold
Would it be possible to sand out the print lines of the plug and go up to something like 800-1200 grit and then do the final polish on gelcoat of the finished mold?
But how do I go about not having the plastic plug sticking to the mold?
Is easy lease enough? Maybe some wax and PVA? Will some kind do release tape work (complex shape though)? Seal the plug in epoxy? What about printing in dissolvable plastics HIPS + D-limonene, PVA and water? Print in PLA heat up finished mold in water bath or oven to 60-70C and peel the PLA from the mold? Or just say f*** it and sand the plastic down?
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By Warren (Staff) - 1/18/2019 9:33:57 AM
Release agents you want to be using a modern semi-permanent release agent. That will give you a better release every time.
Bagging process is down to whichever you find easier and quicker for your mould. Flange bagging and envelope bagging both can work well. Silicone bagging is down to having the right bag shape, suitable seals and ensuring longevity to make it worth while. Traditional bag and gum tape is technically easier to get right.
Cutting cloth use a good quality template then some battery electric shears if you want to cut relatively quickly. Bosch and plenty of other companies offer good quality shears.
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