Poor 3rd Coat

Welcome to the new Bear Mountain Builders Forum - an interactive internet service we provide to encourage communication between canoe and kayak builders
Post Reply
User avatar
Kermit
Posts: 62
Joined: Mon Nov 28, 2011 9:01 pm
Location: Ottawa, Ontario

Poor 3rd Coat

Post by Kermit »

Looking very patchy.

Going to scrape the runs, then sand the whole surface.

Do I patch the bad spots, or recoat the whole canoe?

Chris
KenC
Posts: 190
Joined: Tue Jun 01, 2004 10:42 pm
Location: Oakville, ON

Re: Poor 3rd Coat

Post by KenC »

I'd just patch the low spots to bring them up to a comparable thickness as the surrounding surface ... if you recoat the entire boat, you'll raise the "highs" by as much as the "lows" and still end up uneven. As long as you can get a fair surface prior to varnishing, any patches will be invisible.

After giving the entire hull a good sanding, the low spots will still be shiny ... rough them up with sandpaper over your fingers (wear gloves, as it can get hot) before applying the patches, to improve adhesion.
User avatar
Jim Dodd
Posts: 1359
Joined: Wed Feb 08, 2006 11:08 pm
Location: Iowa

Re: Poor 3rd Coat

Post by Jim Dodd »

Hi Kermit
It's hard for me to visualize what your canoe looks like, but I wouldn't sand unless you have the weave completely filled, you could end up sanding into the weave. Scraping is the best until you have a complete cure, about a week of more.

Sometimes little patches of resin show up in the finished canoe. Might be best with a full thin coat.
Are you applying with a roller, or a squeegee ?

If you can, post a pic.

Jim
Keep your paddle wet and your seat dry!
User avatar
Kermit
Posts: 62
Joined: Mon Nov 28, 2011 9:01 pm
Location: Ottawa, Ontario

Re: Poor 3rd Coat

Post by Kermit »

Unfortunately, no photos of the patches yet, still recovering from the all nighter. :sleepy

The patches are in some areas just missed 3rd coat sections and other areas are where the impression of the weave is still noticable on the surface of the epoxy.

I was brushing and squeegieing.

I am less concerned with a noticable patch as I am with a smooth surface and good chemical / mechanical bonding.

This is my first canoe, I am not expecting perfection, but ... longevity.

Cheers,

Chris
User avatar
Jim Dodd
Posts: 1359
Joined: Wed Feb 08, 2006 11:08 pm
Location: Iowa

Re: Poor 3rd Coat

Post by Jim Dodd »

Love that you're not stopping with just one !

I often tell people," You don't learn to ride a bike, just to go around the block ONCE !"

It's amazing what we learn from the FIRST one !

Keeping sharing your experience !

Jim
Keep your paddle wet and your seat dry!
User avatar
Kermit
Posts: 62
Joined: Mon Nov 28, 2011 9:01 pm
Location: Ottawa, Ontario

Re: Poor 3rd Coat

Post by Kermit »

Here are some quick photos from this morning..

Missed spots;

Image

drips and visible weave;

Image

Image

Going to see where I am after the sanding, but I definitely need to touch up the missed spots....


Chris
User avatar
Kermit
Posts: 62
Joined: Mon Nov 28, 2011 9:01 pm
Location: Ottawa, Ontario

Re: Poor 3rd Coat

Post by Kermit »

Thinking about a full 4th coat using rollers, anything I need to know?


Chris
Post Reply