removing/stopping defects and strengthen/reinforcement of a part


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ARSOUILLERB26
ARSOUILLERB26
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Hello everybody, I contact you for a few problems about a carbon kevlar tray I ve made

URL=http://imageshack.us/photo/my-images/707/40791410150587709709216.jpg/][/URL]

My first problem is for me a real nightmare: tiny bubbles:







I eliminated a lot them by using resin infusion (but not all of them) and using bristle roller but to have a perfect finish, I don't see any other way than to varnish (if there is an other possibility please let me know)

So I would like to know how to make this perfectly, what products do you use (I didn't see them on your shop) and the application method to have a perfect gloss finish .





For my second question, I've done this tray with 2 layers of carbon kevlar and with 2 of red traced carbon ^^ in the middle but it's too flexible specially on the 
flat part.
















I would like to know if it's possible for a next one to make it more stiff by putting a kevlar cross in the middle of the reinforcement layers Throughout the flat part and if it will be (for just one kevlar layer) visible on the exterior of the tray?

Or if is it possible to make the tray for stiff by an other way (curing?) cheaper than to put  2 or 3 more carbon reinforcement layers.





By advance, thank you for all your answers  Smile
Edited 13 Years Ago by ARSOUILLERB26
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Kevin-Lee
Kevin-Lee
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If your only getting -0.8 bar you are not at full vac, follow the EC instructions/video!

ABSOLUTE vac is needed for the infusion, you are technically going to "degas" the resin in the bagging stack and this can be observed by the bubbles in the bag moving faster than the resin. If you pay close attention to the feed and vac pipe/connector blocks you will see almost no bubbles collecting around these areas or in the pipes within the clamps if done correctly! Also pay attention to the areas that have 3 layers of mesh, usually at the feed and/or vac connections, almost no bubbles should be in these areas too, this will be a good indicator as to the final product.

I have just done an infusion with tinted blue resin and white diolen to show the process/bubbles clearly... I will post some pics soon...

Small pinholes can be fixed with the correct colour wax crayon, for carbon/diolen/carbon kevlar use black, it will not be a perfect solution but will stop dust and moisture from filling the voids and making the problem worse. Obviously you wouldn't do this on a performance part, but for a quick fix on a small household part this should be better than throwing it away!

Cheers,

Kev.

Update:

See pics. Notice the diolen is photographed in the negative and any imperfections/pinholes/voids would show as black spaces or dots... But its clean!
Also note that the area around the vac connector block is free of bubbles, as was the feed connection area , this was made easy to observe with the blue resin...

Attachments
Black Diolen 2x2 (negative).jpg (558 views, 1.00 MB)
CK 2x2 01.jpg (1.1K views, 1.00 MB)
No Bubbles 02 (Vac Side).jpg (803 views, 1.00 MB)
Edited 13 Years Ago by Kevin-Lee
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ARSOUILLERB26 - 13 Years Ago
Warren - 13 Years Ago
Joe - 13 Years Ago
MAVERICK - 13 Years Ago
ARSOUILLERB26 - 13 Years Ago
Kevin-Lee - 13 Years Ago
Joe - 13 Years Ago
Warren - 13 Years Ago
Matt (Staff) - 13 Years Ago
Warren - 13 Years Ago
ARSOUILLERB26 - 13 Years Ago
Kevin-Lee - 13 Years Ago
Warren - 13 Years Ago
ARSOUILLERB26 - 13 Years Ago
Warren - 13 Years Ago
Joe - 13 Years Ago
ARSOUILLERB26 - 13 Years Ago
Joe - 13 Years Ago
Matt (Staff) - 13 Years Ago
Joe - 13 Years Ago
Warren - 13 Years Ago
Kevin-Lee - 13 Years Ago
ARSOUILLERB26 - 13 Years Ago
Matt (Staff) - 13 Years Ago

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