COMPOSIT 101,202 AND ADVANCE Newsletter.

-What sandpaper to use?

In this issue of the Composite 101, 202 and Advance Newsletter:

1. Addendum to last newsletter.

In our last edition, we discuss how weather and temperature affect fiberglass work. I want to add that ambient humidity can also influence resins behaviors.  Resins are very sensitive to humidity it can affect cure. There’s no other solution than wait for more suitable climate to do the lamination. This is also true for vacuum bagging.

Thus, If you are using PVA has a release agent this is very important, PVA is really affected by moisture. So you have to start laminating as soon has the PVA is dry. Otherwise the moisture will attack the PVA film and the resin could stick to the mold and ruin it.

2. A composite question FROM SUBSCRIBERS.

Subscriber’s question by Phil Morris:

-“What sand paper should I use to repair gel coat”

Composite 101, 202 and Advance answer:

Here’s an over view of the procedure. First, you can use whatever sand paper the need be for the preparation/cleaning of the repair. Once you are set for the sanding of the gel coat you applied and you are sure that the gel coat has fully harden you are ready to start the sanding.

If you are not experimented with gel coat repairs than take it slow. Start with fine paper like a 180 or 220 grit. Then move on to the 400 sand paper with each sand paper change sand off the marks left by the previous sand paper.

Now come the time for wet sand paper grit 600. From that point you can use a polishing compound that remove 600 grit sand paper marks or keep on sand with finer sand paper.

The compound will specify which grit it’s good to remove. Use a proper buffing pad check the recommendation of the compound manufacturer.

3. Workshop.

We are currently setting new dates for workshops. If you would like to attend one, please let us know your location on the web site form on this page:

                         http://workshop.fiberglasstechnique.com

You’ll also find details about those Workshops.                                                                 

We invite you to come visit our website and take a look at the table of content
of our composite visual guide. The guide is currently at a special price.
Guide.Fiberglasstechnique.com

If you have any question or suggestions about the content of this newsletter don’t hesitate to let me know

Sincerely,
__________________

Mr.Carol FortierProject manager
WWW.FiberglassTechnique.Com
Cfortier@FiberglassTechnique.com