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Is a standard rubber mallet sufficient for installing new posts in the body of my JS100? The old posts, from the stock Lo TRS II Floyd Rose style tremolo have been successfully removed, and the new replacement posts appear to be the same size. Looks like I'm good to go, without any modifications, however I'd like to inquire about the what tool is best for this job. I had initially planned on drilling holes to accommodate the larger posts from a Gotoh 1996T I had lying around, but I've since decided I'd be better off not risking that. Thanks!!

Provided the holes and posts mate well (are appropriate sizes) I've been able to carefully push the posts in by hand with a wooden block. I've used a C clamp too in the past for tuner grommets which provide a similar situation. Having said that posts in the middle of a body would require a very deep clamp. I've heard of people using their drill presses to push posts in. Tapping in gently with a mallet and wood block could be helpful if they're really tight.

I always worry about chipping finish.

I like to prep the finish around the holes, by chamfering them with a file.

Thanks mate! I really appreciate the input.