Summa DC5 - Flexcut

DC5 User’s Manual
Detailed Operation 4-7
4.3.5 FlexCut
The FlexCut submenu is explained in section 3.2, however setting up the DC5(sx) for FlexCut
is not that easy. Follow the next procedure to try and determine usable FlexCut settings.
1. Turn out the knife so that protruding knife tip is longer than the material thickness.
2. Go to the knife pressure submenu (see section 2.4). Increase the knife pressure gradually
and perform the knife pressure test in between until the minimum knife pressure to cut
the material completely through is reached. Then increase this value with 5-10%. Write
this value down.
3. Turn the top piece of the knife holder a half turn counterclockwise. In the ‘knife
pressure’ menu, press the test to activate the knife-pressure-test-pattern. If the pattern
is still cut out completely, repeat these actions. Once the pattern is not cut anymore,
increase the knife depth (turning clockwise) with 1/8’s of a turn and perform the test
until the minimum required knife depth is reached. Now increase (clockwise) the knife
depth slightly (½ of a turn).
4. Now decrease the knife pressure gradually; perform the knife depth test in between
until the knife pressure is set as described in section 2.4. Write down this value also.
5. Go to the FlexCut sub menu and set the full pressure to the pressure that was needed to
cut through the media and set the flex pressure to the normal pressure. Set the full
pressure length to 10mm and the flex pressure length to 1mm. Then cut a test pattern.
Depending on the strength (size) of the ‘bridges’ go to step 6 or 7.
6. If the bridges are too strong, then decrease the flex pressure length and do the test
again.
7. If the bridges are too weak, increase the flex pressure length and do the test again.
NOTE:
Never turn
the knife this far out,
so the media can hit
the knife shaft. Only
the knife edge may
get in contact with
the media in order to
avoid media crashes.
NOTE: It is discouraged to use brand new knives for cutting through. Pressure
setting and knife depth of brand new knives change quickly.
NOTE:
It is recommended to use cutting speeds of 300mm/s (12 ips) and lower
when the cutting pressure is 200 gr or higher.
NOTE: Keep the flex pressure length between 0.5 and 1.5mm. If no good
setting can be found, then try changing the flex pressure itself (lower if bridges
are too strong, raise if they are too weak).