How to get the 2. lens front element out of Carl Zeiss Planar 1.7/ 50 T* C/Y mount. ATTENTION!

How to get the 2. lens front element out of Carl Zeiss Planar 1.7/ 50 T* C/Y mount.
ATTENTION!
This action could damage your 2. lens
element if you don't take good care. So, when
cutting around the Aluminium mount
of the 2. lens, you should have a VERY good grip on
the sharp knife. Remenber to set a mark BEFORE
take out the 2. lens element.
It's on your own risk!
Here are some link's to different repair tool's and lubricating stuff:
Clamp tools:
www.ebay.co.uk...
Flex-I-File:
Ultra Fine Needle Piont Scriber #6114
www.flex-i-file.com
www.alphaabrasives.com
Dental instruments are:
Hollenback Carver
“plastic instrument” (a.k.a. stellite)
Wall’s carver.
"ORBIT" HEPA Blower:
photosol.com/p...
You can buy it here:
www.adorama.co...
"Liqui-Moly" LM 50 Litho HT:
www.amazon.co....
"Liqui-Moly" LM47 MoS2 grease with Molybdenum disulfide:
products.liqui...
or on Amazon:
www.amazon.co....
Contact glue:
www.loctitepro...
Japan Hobby Tool rubber cone:
www.amazon.com...
18 different size rubber repair tool's:
www.amazon.com...
You can also buy this set.
Lens Repair Set with pointed, flat, half flat tips:
www.amazon.com...
JIS cross head screw driver's:
www.amazon.com...
Or this set, that is the set I use:
eustore.ifixit...
Lens cleaning wipes (PEC-PAD):
www.amazon.com...
Thin Cotton Buds x 200 you can buy them here:
www.muji.eu/pa...
DSLRKIT Pro Lens Vise Tool Repair Filter Ring Ajustment Steel 27mm to 130mm:
www.amazon.com...
Japan Hobby Tool Helical Grease Made in Japan:
www.amazon.com...
Loctite 222 50ml Threadlocker
www.amazon.com...