Need help...Old chalk on box call lid?

[barry]

My buddy has an old box call that has a build up of chalk on the lid.
How can he get the old chalk off without damaging the lid surface?

[drenalinld]

I always use scotch brite pads.

[gwa]

I always use scotch brite pads.

Yep

[pappy]

Barry, one way is to use Acetone on the bottom side of the box call paddle, just rub some in the direction of the paddle length ways. It will remove any older chalk and slightly raise the grain for new chalk application.  If you don't have any acetone, (walmart sells it), you may try rubbing alcohol, make sure there is no oil in in. After you clean it you could lightly sand it with 220, then chalk it, hope this helps, Jack