another trick to removing core is using a ground down Allen key chucked in a 
drill, working from above. 

http://cncwindstar.blogspot.com/2019/07/deck-fill-core-removal-and-reinforcement.html?m=1

To keep the epoxy in place make sure you use lots of colloidal silica in the 
mix.

Dave 
Windstar 33-2


Sent from my iPhone

> On Feb 17, 2021, at 8:16 AM, Hoyt, Mike via CnC-List <[email protected]> 
> wrote:
> 
> 
> Put tape on the underside to cover the holes before filling with thickened 
> epoxy.  Then once cured drill appropriate sized hole in the epoxy for the 
> fastener.
>  
> Mike Hoyt
> Persistence
> Halifax, NS
>  
> From: Ronald B. Frerker via CnC-List <[email protected]> 
> Sent: February 16, 2021 7:26 PM
> To: Matthew via CnC-List <[email protected]>
> Cc: Ronald B. Frerker <[email protected]>
> Subject: Stus-List Re: adding tracks to deck
>  
> Do you do anything special to keep the epoxy in place until you can put some 
> tape under the glob?
> Ron
> Wild Cheri
> C&C 30-1
> STL
>  
>  
> On Sunday, January 24, 2021, 01:31:10 PM CST, Matthew via CnC-List 
> <[email protected]> wrote:
>  
>  
> Regarding Dennis’ comment about overbored holes being hidden by the track, a 
> trick I like to use is to drill up from underneath and stop when the bit 
> encounters the underside of the deck.  The result is that the hole on the 
> deck surface stays the same size.  In addition, you know precisely where to 
> place the deck fitting and drill the new hole.
> 
> Thanks to all of the subscribers that contributed to the list to help with 
> the costs involved.  If you want to show your support to the list - use 
> PayPal to send contribution --   https://www.paypal.me/stumurray  Thanks - Stu
Thanks to all of the subscribers that contributed to the list to help with the 
costs involved.  If you want to show your support to the list - use PayPal to 
send contribution --   https://www.paypal.me/stumurray  Thanks - Stu

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