Finally the box is closed.
Before that I remembered to weigh the back.
However, I forgot to record the tap tone of the box and the back...
I did not do a dry run for the clamping but it was mistake.
As I glue the back, I could not insert the clamp on the heel area as the solera was blocked from below.
I had forgotten to allow some space for the clamps to go in.
Anyway I just clamp the rest first then proceed to shift the woods below to allow the clamp to go in.
So rule of thumb, always do a dry run if you have not been doing the process for a long time.
I removed the clamps and check the fit.
No problem with the fit.
After that I proceed to trim the overhangs.
During clamping it helps to have about 5mm or so of overhang.
Trimming the overhang - assortment of tools used: Rebate plane, chisel, LA block plane, scraper etc...