Spar end inspection

[N180SD]

We are in the process of recovering a super decathlon. When the wing was originally painted they also painted the spar ends.
Per the service letter/spar inspection AD, the butt ends should be checked for cracks.
What is the best way to remove the paint from the wood spar in order to inspect it?

Thanks

 

[Nicks1]

Might want to call Rainbow
(509) 765-1606

This is what AC 43-13 says about sealing spar butt:

Preventing Cracks. An important step in the prevention of longitudinal cracking, particularly in spar butts, is to ensure that the wood is thoroughly sealed with a penetrating and highly moisture-resistant finish. Application of a thin, slow-curing epoxy adhesive or sealer can be very effective in slowing or preventing moisture changes in spar butts.

Nick