Dolphinite expansion?

[Figment]

This is a new one on me.

I used a bit of dolphinite between some screw-fastened pieces of coaming a couple of weeks ago. I cleaned up the consequent squeeze-out and proceeded to varnish.

Only NOW do I get a few little pimples at the joint. It appears that the dolphinite is expanding (warmer temperatures?) and looking for the easiest path of relief.

I've never had this problem before. Should I bother to shave the joint down and rebuild the varnish coats, or is it just going to happen again in a couple of weeks? Should I just let it go for a couple of months to see what happens?

[Jay Greer]

This is why I wait a few days before varnishing. Making up a sharp skew tipped blade out of a wooden tongue depresser allows the squeeze out to be gently scraped off without damaging the sorrounding surface. Scrap pine works even better as it conforms slightly to the joint junction.
Jay

[Woxbox]

Or is it the Dolphinite or the wood that is expanding?

[Figment]

Good question. I don't know the answer.

I did wait the better part of a week between bedding and varnish, but it was a chilly week.

[Concordia...41]

Side / semi-related topic:

A few weeks ago, a friend was sitting in the cockpit and good-naturedly kidded me that the bronze strip around the cockpit coaming wasn't bedded completely.

I looked at it, and he was right. Frankly, in the 4-5 months since I'd done it, something expanded and there were actual gaps visible if you crouched down and looked between the bronze strip and the (painted) wood.

Hence a new category on the project was created:

IILLE :D

I've always categorized/prioritized things as to safety, structure ..... all the way down to cosmetic.

But when I was given grief about a piece of bronze trim that wasn't bedded perfectly, my instant response was:

If I Live Long Enough that that is my worst problem, I will be more than happy to pull that piece and rebed it. :p :p


So .... somewhere .... about 10 degrees below cosmetic.... = IILLE ;)

[Kim Whitmyre]

I scraped and painted my rubrails last month. . .I noticed the other day that the butyl caulking was pulled away in a few spots :eek: :D Oak rub rails, they were there what can I say?

[Bob Cleek]

I've always had Dolphinite squeeze out after the fact. I think it is the Dolphinite expanding from the effects of heat, the sun beating down on the area. I've had this occur seemingly more frequently with wood to metal faying surfaces than with wood to wood and have concluded that the metal heats up more than wood and that's why. I let it dry good, maybe a week, and then just scrape it off. It comes up neatly and easily.

[mike hanyi]

I built my boat with dolfinite between every piece of wood- it was several months untill i got down to the final varnishing and it does com out- at least you know that it has not hardened into a glue. one decade the guy who will have to repair that boat will thank you for using the stuff. love to see you remove something that was bedded with 5200!

mike

[Barry]

Try 3M 5200 next time around

5200 is a Mastic(adhesive) not a bedding compound, wouldn't recommend it for that usage.