Silica with polyester or vinylester?

[Figment]

Jamestown is out of stock on system three, and it occurs to me that this particular repair doesn't NEED epoxy, ordinary old "boat resin" will do.

This might be a dumb question, but; does colloidal silica get along well with polyester or vinylester? I've never done that before.

Thanks all

[Lewisboater]

Are you using it as a filleting material, a glue or as a faring filler?

[Figment]

Adhesive. Recoring a hatch.

[Lewisboater]

NO!... Those are not good adhesives. You are better off with TB3 or PL Premium or...better yet...Epoxy. Neither of those 'esters make good adhesives as they do not bond well to fully cured resins. If you need a small pack just for gluing then try Clark Craft... they have smaller test packs of 1:1 for not too much.

[Canoez]

Jamestown is out of stock on system three, and it occurs to me that this particular repair doesn't NEED epoxy, ordinary old "boat resin" will do.

This might be a dumb question, but; does colloidal silica get along well with polyester or vinylester? I've never done that before.

Thanks all

Give Joe Merton at Merton's Fiberglass in Springfield, MA a call. He'll have some System 3 for ya. Quick, efficient. (No benefit to me...)

[Figment]

See, I just KNEW there was a reason I hadn't done it before.

[kc8pql]

I used to make engineering prototypes for R&D at Owens Corning Fiberglas. Used filled polyester occasionally where high strength wasn't needed because it was such a lousy adhesive. Made cleaning up squeeze out easy after it set because it didn't stick worth a darn.

[Mrleft8]

How much system 3 do you need? I might have it here.

[Figment]

I need probably a quart of resin. I've hardener aplenty.

[Mrleft8]

Did you try Waste Marine?

[Breakaway]

It waste is out of it, try your building supply. That's where I get it around here,

K

[James McMullen]

As mentioned above, polyester resin makes bad glue. For that matter, it doesn't even make all that good a resin, other than for being cheap.

[Figment]

Mertons ships today.

[Canoez]

With UPS, you might see it tomorrow.

[Figment]

Springfield to New Haven commercial address? It should be here before I finish this coffee.

and so I shall be saved from a weekend of working on the house. yech.

[Figment]

Had I gone forth with the original notion without asking the question, I would have been deterred by the evidence before long.



That's the old plywood core on the left, and the upside-down skin to be recored laying flat on the right.
The previous recorer had evidently used polyester. Only the brighter yellowish patch (near the middle of the far end) was still adhered.

On the bright side, the old core popped free with very little effort. I had anticipated hours of digging and scraping away, but it honestly took less than a minute. I think hot glue might have been more effective than the poly resin.