Builders…I have a question.

 

I occasionally need to add micro or a layup over or near a drilled hole in a composite structure without filling the hole.  I’ve used Silly-Putty (It’s a silicone polymer, I think) to plug the hole and done the micro or layup over the Silly-Putty plugged hole.  Then I just drill or pick out the Silly-Putty and redrill the hole.  I think I picked up the suggestion at the Builders’ Assist.  I’ve only used this method on non-structural assemblies so far.  But now I have a structural assembly (rear fuselage access door on a LIV-P) and I’m hesitant to put a silicon based anything near a layup.  Should I be concerned?  Are there alternative methods?  Should I glue a soft wooden plug in the hole to be drilled out later?  (That’s a lot more work.)  Or is there a really slick way to accomplish the same thing?

 

Inquiring minds are…short on information.  Any suggestions?

 

Thanks.

 

Barry Knotts

LIV-P, Conti TSIO-550, progressing glacially.