I would like to ask some tips how to fix bubbles in a completely cured resin?
Unfortunately some bubbles has showed up at the end of the first stage so i couldn't fix it at that moment because it was partially cured.
After the finish of the second stage and cured completely, i have drilled some test holes into an off-cut piece to check what's going to happen when i filled it with resin again. I cleaned the holes with white spirit and vacuum cleaner so the holes were fully clean. But i am not really satisfied with the results. Is there any way to fix those bubbles?
I attached 2 pictures (bubbles and test holes) I have used Glasscast 50

Hi Warren,
Thank you the tips.

Should 1 week difference between the pours be alright?
I mean the main pour has cured 5 days ago. So do i have a good chance the fix it properly if try to do it today? (drill holes)

Peter