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Pro Seal Substitute
Has anyone used JB Weld or some type of Gorilla glue instead of pro seal for attaching the foam ribs in the trim tab and elevator?
I used JB Weld on another project and it was very nice to work with versus pro seal. |
Silicone
I used neutral cure silicone, as advised by my inspector.
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3M VHB tape
I used the VHB double sided tape that Van's sell, and they also mention (somewhere) that this product is a substitute for pro-seal in the applications you talk about.
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I am pretty sure the VHB tape has never been approved for installing the foam
ribs. I would strongly recommend against it. I wouldn't recommend using silicone adheasive either. |
Also, JB Weld is fairly brittle, so I wouldn't use it.
Stick with the plans and it'll work out best. Dave |
Pro Seal is a brand name of Mil Spec Polysulfide. Any product that meets the same Mil Spec would be good.
I would not recommend any substitute that does not meet the same Mil Spec especially in any moving aircraft surface. |
I keep a quart kit in the freezer and thaw it out for use. Mix it on cheap throwaway dollar store cutting board plastic with a bondo squeegee. I?ll have new stuff for tanks but for everything else this works great.
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I have been using hotel type card keys for years to spread epoxy, bondo, and pro seal. They work great.
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I think you're right
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