Talk Composites - The Forum for Advanced Composites

Issue after sanding

http://www.talkcomposites.com/Topic32883.aspx

By C4RBON94 - 5/19/2019 5:49:07 PM

Hi guy's,

Did a hand layup on my part following the guide, but after sanding the resin back before final lacquer, it seems there was a low spot where I've hit the material and taken a chunk out of the part, see images below.

Any ideas what's best to repair this? Or is it a case if start again?
By SleepingAwake - 5/20/2019 2:46:06 PM

C4RBON94 - 5/20/2019 7:55:16 AM
Lester Populaire - 5/20/2019 7:20:17 AM
C4RBON94 - 5/19/2019 8:11:19 PM
scottracing - 5/19/2019 8:01:30 PM
this looks more like you had a bit of a void in the part or bridging and have just sanded out the bubble, I would mix up some resin again and apply to the local area.
Let it cure  and then sand back.


Ok so is there a way to replace the missing bits of weave or is that a no go?

yeah looks like you had a void underneath and sanded trough the carbon. your best bet would probably be to laminate a patch on top of it which will be structurally sound, but visible. for a cosmetic part you can maybe increase the size of the patch and have the cut line on a ledge, where it's way less visible.

Ok, it's quite a large part with minimal edges so I'm not sure if there's a clean way to join it as I'm guessing any join lines would show?

When you put a patch on top try to align the weave which will help to somewhat reduce the visibility...