Shaving off 8mm to 1cm from Bone Possible in Rhinoplasty?

What you are describing is exactly what is done as part of the rhinoplasty.   8 mm or more seems like quite a bit to lower a bridge, but I have seen cases that gave required that much.  Photos would really get helpful.  I would also suggest going on a few consults with surgeons in your area known for their rhinoplasty work.  Good luck.

You can certainly have the bridge of your nose lowered, and have the tip of your nose deprojected with Rhinoplasty Surgery. 1cm sounds like you want your nose significantly smaller than it is now. Significant reduction in size will lead to other changes in your nose like widening.
Seek several consultations from qualified, experienced Rhinoplasty surgeons, and view many photos. Feel free to post / email your photo (full face frontal, and profile), and I'll be happy to share my thoughts.
Best regards

 It is possible to make your nose smaller in all dimensions. It is important to see an experienced rhinoplasty specialist to evaluate your skin thickness as well as facial proportions.

Yes it can be achieved. However 1 cm seems to be too much. Look at your profile view and make sure you don't have a small chin. A  small chin can make your nose look bigger than it really is.
Also, reducing the nasal hump too much is more likely to lead to complications than a conservative reduction.
Regards

Newts UK, the amount of reduction performed on your nose really depends on a number of factors. One of the most important considerations is your skin type. If you have thick skin, there is a limit to how much your nose will 'shrink wrap' down following reduction of the underlying bone and cartilage. Thinner skin tends to shrink down more readily and is more favorable when looking to make the nose smaller in size. If you are able to reduce the nose by 8-10 mm from bridge to tip will ultimately depend on whether or not the final size is proportional for your face. This determination is best made through careful nasal analysis done by an experience rhinoplasty surgeon. The link below may be helpful in better understanding what goes into this type of analysis. It would be beneficial for you to undergo a personal examination followed by computer imaging of your nose to determine what would be the ideal direction and degree of change.

Eight millimeters to one centimeter is maybe too aggressive of a reduction in a rhinoplasty procedure. Four to six millimeters is more the amount removed during the rhinoplasty. This is both bone and cartilage reduction and sculpting to give a new refinement to the nose.

One cm of reduction is on the extreme side and you really probably don't need to take that much off when you undergo rhinoplasty (or nose job / nose shaping / nose reshaping / nose cosmetic surgery / nose plastic surgery). What might bring your nose into balance is lifting up the tip of your nose and placing a graft in between the eyes to offset what you are feeling is a big hump of a nose. The only way to tell is to look at you in person or through some well taken photographs. Your nose can be made to look like what you want to a significant degree.
Remember, nothing is magic but we, as doctors, are trying to make it look as though it were magic.

I must agree with the other surgeons - taking 1cm off the nasal dorsum seems rather much. I would suggest visiting a facial plastic surgeon or plastic surgeon who performs digital imaging. The surgeon can then sit down and illustrate what may need to be done to achieve the goals you desire. In some cases, removing bone is necessary while in others, actually adding bone is what is needed to achieve your desired result.

Newts,
It sounds like a reasonable plan, but also sounds like a lot of nose to remove.  I recommend consulting with a plastic surgeon for some guidance as to how much overprojection of your nose can be corrected.  Good luck!

Dear Newts
Taking down the bump on a nose varies patient to patient. I must admit that it does sound like a lot 1 cm. It may appear this way to you but sometimes taking less off the bump and building up the bridge gives a much nicer look.
See a plastic surgeon who does a good deal of noses both open and closed. Have him evaluate you on a computer to show you how you would look with the "new" nose and discuss your desires with him. You may need to see several doctors before making your final decision.
Good Luck.