"Dear mister Zak
We found your site www.zakgear.com on the Internet. We were very impressed.
Can you please send us some more data about yourself, your work and job at
the general motors and of course about the site. What is the aim of the site
and for who did you put all this on the Internet?
We intent to mention the site on the Internet-page in our professional
magazine Aandrijftechniek. This monthly has always one page on which we
mention some sites which might be interesting for our readers.
Our trade magazine Aandrijftechniek (= Drive-technology) publishes about
electrical, mechanical, hydraulic and pneumatic power transmission and drive
systems, control systems and sensors…"

"Dear Sir,
We are interested in your Gear software…."

"I was interviewing one Russian Ph.D. gear specialist. He says that he worked with Dr. Zak in Russia.
He also mentioned that Dr. Zak never had any gear education."

"Your digital gear models violate 20 laws of gearing. We still do not have PC based gear software for our gear machines because thousands lines of codes in our FORTRAN programs. It is impossible to simulate spiral bevel gear geometry with 16 lines program."

"It was a great pleasure for me to visit Your site.
I'm not sure in my english and in Your host programm's ability
to work with russian alphabet, so I send the following part
of my letter as an applied file…"

"I am passing this question to Mr Boris Zak because he
may know it more than I. His web site is
www.zakgear.com, where you can see an animation of a
variable ratio gear set. Good Luck."

"Dear Mr. Zak:
I recently visited your web site and learned that you have developed a new
software to simplifying the design of all types of gears, and much
interesting is that of "worm face"…. "

"Hi Zak,
Thanks for the information. I am still interested in your developments, but
just have been a little busy. This Friday afternoon just did not want to
work so I went to your website. Good stuff. I really like your claim that
gear theory will be useless, because that is mostly our problem--fundamental
problems…"

"Hi,
I am from GEAR TECH CENTER. I am interested in the 3D gear
models. Please provide me the capability of your software or call me..."

"Hello,
I just visited your web page and your impressive graphics (along with
simulations). I have been working over the years on software development
regarding the concurrent design and manufacture of generalized gear pairs.
To date, I am able to display some graphs similar to yours but yet to
animate. Further, I have generated some STL files where I have had some
strange gear elements produced using RP. The gear elements work fine. One
difficutly I am having is getting my files in other file formats. I would
like file formats such as DXF (for autocad importing and display).
Further, I would like to have the files in other formats for displaying (as
you have with the line drawings). Moreover, I would like to get these
files in a format (something where I can generate g-codes) such that I can
mill them using a CNC milling machine. Do you have any suggestions…"

"Hi, I was wondering if there was any chance I could get a DXF or 3DMF
version of your crown gear model. Your gear models are definitely the best
I've been able to find on the web."

"Hi,
I've just come across you website of gears. Nice…"

"I have just visited your website, I was impressed with
the range of analysis…"

" Hello -
I am interested in 3D CAD generation for gears. Judging by your nifty
web page animations, you have such a product. I would like to get
more information about it…"

"Nice website!…"

Send your comments to zak@zakgear.com