Talk Composites - The Forum for Advanced Composites

Tight corners

http://www.talkcomposites.com/Topic2427.aspx

By Tollaus - 7/28/2012 10:19:11 PM

I am about to start my first resin infusion experiment which is a case with four 90 degrees rounded corners. 
As I do not want to make a disaster in my first attempt, I would like to know I'd I should adjust the fibre on the mould. Should I use a spray adhesive and try to adjust the fibres at the best or I can risk to vacuum  directly?  
I would like to avoid nasty wrinkles on the outside part. 
Any suggestion is welcome! 
Thank you very much in advance.
By fgayford - 11/5/2012 12:18:01 AM

When you draw a vacuum do not allow it to pull down tight at all.

So start to draw down the bag and stop the vacuum and then shove the carbon and peelply and infusion mesh into the corners the best you can.

Now draw down abit more vacuum stop and repeat pushing the materials into the corners.

Repeat in steps and you will feel the corners are in snug by the time you get full vacuum.

What ever you do make sure the mold is warm and the infusion resin is also warm before you infuse.

Hope this helps.

Fred