infusion

just wondering if anyone would have attempted to infuse a hull of a catemeran upside down. The hull was damaged in high winds and delaminated big time in the tunnel and they need it fixed by infusing it from the outside.

 

No problem ,my stuff is upside down on the jigs.

 

this cat is all finished inside it has to be fixed from the outside going in without tearing everything out from the inside

 

Should be no problem,look molded boats are infused everyday,I fail to see a issue here.

 

Just curious,

why would you turn the boat to get the job done?

 

Turning a finished and used boat upside down can become messy (tanks, engine, etc) but for the infusion there is not a problem at all.

You could also use spray glue to hold the fabrics upsidedown against the hull. Once the bag is on, it will not fall down. Multihull laminates are not that thick usually.

 

hey thats a good idea never thought of that . oh this has a foam core would that cause a problem.

 

use spray glue to hold the fabrics ...yep, there is a special glue make just for that very thing, have a read of the DIAB website, we used em in China for the very same thing.

 

In general not, BUT........

Are you sure the foam is still sticking to the inner shell? No, you aren´t. That is your main problem, not the way to apply the new layup.

Regards
Richard

 

Good repairs need thorough examination.

For the spray glue it is not a problem to keep fibers to foam core.

I have some reports on the spray glue I sell which claim that ILSS losses are within the normal deviation of the test results. Or in plain words: they were not able to determine a loss.

On infusing upside down: I recently supervised some pipe repairs (joint reinforcement), and as you can understand, half of the infusion was up-side-down. No problem at all. A bit fiddly at times, but nothing to worry about.

 

Try this: http://www.ok2spray.com/index.php Nice stuff.

 

Or these:

http://www.northstarchemicals.com

 

I have used Infuzene for years and on some tough complex jobs.