Bogging chines and corematt function ?

[Vendy]

Hi guys ,
Got a quick question here

1 . what are the functions of corematt really ? For stiffness or to thickned the laminate ?
2 . I worked through 2 different companies.
One of them bogged the chines after tie layer to make it stronger they said
The other one didnt bog the chines . As the bog itself is the weak part . Totally confused here . Fyi both boats are 6 meters.
3 . Whats the difference between soric and corematt ? Thickness difference ?

Thanks heapss

 

[rxcomposite]

1 . what are the functions of corematt really ? For stiffness or to thickned the laminate ?
Both. Incresing thickness will stiffen laminate

2 . I worked through 2 different companies.
One of them bogged the chines after tie layer to make it stronger they said
The other one didnt bog the chines . As the bog itself is the weak part . Totally confused here . Fyi both boats are 6 meters.
The inside corner of the chine must be bogged to ease the bending of the cloth. You cannot force a cloth to bend at 90 degree otherwise you get bubbles or voids. All chines must have additional tabbing or reinforcement as this are stress risers. 1.5x minimum of the original laminate.

3 . Whats the difference between soric and corematt ?
Soric is a hollow flexible foam to facilitate resin flow. It is also a bulking material. Since resin flow is so fast, a resin brake is added at the end like a piece of coremat. Coremat is generally used in hand lamination to add bulk to the laminate.

Thickness difference ?
Choose your thickness for its use. Many available.

 

[Vendy]

Hi .thanks for answering

just wondering . When i worked in the infusion . They didnt use any of corematt. Is corematt just for hand lay up ?
Thanks

 

[ondarvr]

The choice of adding bog to a radius or contour line like a strake may be done for a couple of reasons, the consistency of the bog may also be different.

Frequently it is done to speed production, it takes time to laminate into a strake or radius, so you fill it up and glass over it. Other times, like mentioned, the radius or contour line is small and the fabric won't follow it easily, so to eliminate air or bridging you sweep some into it.

What the bog is made from and how much is used can determine how successful it will be. Some are weak and brittle, others are far less so.