In this issue of the Composite 101, 202 and Advance Newsletter:
- Added feature to the website.
- How to repair a fiberglass part part-4
1. Added feature to the website.
We added at the website a button to access the preceding newsletter. Several subscribers made this request. You can go at www.fiberglasstechnique.com and click on the past newsletter button to access them. You will land on the current newsletter and in the top right corner; there will be a drop down menu to choose other past Composite 101, 202 and Advance newsletter.
2. How to repair a fiberglass part part-4
Sanding the gelcoat.
Once the gelcoat is fully harden put a masking tape over the gelcoat bump you created; like in the step 1 in the picture. To make sure you will not scratch the surface through the masking tape, you can put 2 or 3 layer of masking tape on top of each other. You then simply remove one layer at the time as you get closer to even out the surface.
With a hard sanding bloc and a grit 100 sand paper, start to sand through the masking tape and then on to the gelcoat, using the X sanding technique. You will slowly smooth out the bump. Sand until you are at step 2 in the picture. At this point, you cannot remover anymore material unless you remove the masking tape; your sanding paper is evenly touching all the surrounding masking tape. Notice how there is an even, pink halo on the masking tape, this where the sand paper touch. But remember the closer you get to the surface the better.
Click here to see a bigger Image.
Now it’s time to remove the masking tape and start sanding with a 600 grit sand paper and you still have to work with a hard sanding bloc. Carefully sand with the bloc flat on the surface, do not hesitate to sand as far as 2” pass where the bump was. Even if the sandpaper in a very fine one at 600, you still have to use great caution not to sand through the gelcoat. Stop whenever everything seem right to the touch or the sight. At this point, you can use the 600 grit sand paper with a smooth, but firm sanding bloc, sand few more stroke to even out the surface. You are now at step 3 in the picture.
…The conclusion in our next newsletter issue…
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Sincerely,
__________________
Mr.Carol Fortier
Project manager
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