Thanks TM51 on the ball-end mills and sorry PJs about hijacking your posting but shop notebooks are important. Thanks for reminding us about updating changes made on the fly (I try to avoid these becasue they don't always work out as expected) and noting the as built dimensions. Also converting the all the decimal drill hole sizes to the equivalent numbered, letter or fractional drill to be used.
I use a spiral notebook with a light green 0.2" grid. The spiral binding allows the notebook to lay flat and especially useful for making copies of the pages for use in the shop. The notebook is also in the shop for notes but handling the copies keeps the oily fingers from staining the pages - pencils don't work on oily pages. I found a Pentel 0.7 mm drafting pencil and stainless steel erasing shields for correcting work best for me. I like the medium 0.7 mm thickness pencil leads over the super thin 0.5 mm and 0.3 mm leads.
I used to work with field geologists and field geophysicists who used bound notebooks for note taking and they always used pencils and not ball point pens. They said the notebooks sometimes get wet in heavy rains and the ink would run but not if they used pencils. The same would be true in shops with coolants.
Regards, Paul

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