SummaCut cutter User’s Manual
Contour Cutting 3-19
3.5.2.2
Values of the FlexCut parameters
Determining the values of the FlexCut parameters can be divided into two main steps.
The first step is to determine the ‘fixed’ pressure values. Second step is determining
empirically the length parameters.
First go to the knife pressure test as described in section 2.2.2. Determine the pressure
need to cut completely through both vinyl and backing. Make sure the pressure is not
set too high and the knife is not turned out too far.
After the needed pressure is determined, raise the knife a little bit to check if it still cuts
completely through. If this is the case, do this again. If it does not cut completely
through, then turn the knife out as it was.
Now lower the knife pressure a little bit to check if it still cuts completely through. If this
is the case, lower it again a little bit. If it’s not the case, set it at the previous value.
This is how the correct pressure to cut completely through the media is determined, as
well as the correct amount the knife is turned out.
NOTE: Write down the pressure that was needed to cut completely through
and do not change the physical knife depth anymore (unless the knife has
worn down a little bit).
Now set the knife pressure correctly to cut just through the vinyl. Also write down this
value.
Go to the FlexCut parameter setting menu as described in section 3.5.1. Set the full
pressure parameter to the value that was needed to cut completely through the media
(determined in step 1) and set the FlexCut pressure to the value needed to cut just
through the vinyl.
NOTE: It is never recommended to use cutting speeds larger than 400 mm/s
(16 ips) with cutting pressures above 170 gr. So,
if the full pressure is larger,
lower the FlexCut velocity.
Now go to the full pressure length parameter and set this to 10 mm. Go to the FlexCut
pressure length and set this one to 0.8 mm. Perform a test. Check the bridges. If they
are too large, perform a test with a lower value. If they are too small (or none-existent)
then raise this value.
The FlexCut parameters are now set.
If these settings need to be adjusted, try with only changing the FlexCut pressure
length. There is no need to adjust pressure settings, unless the knife wears down. In
that case start again with step 1.
NOTE: It is not always easy to find the correct balance between cutting deep
enough and making sure the pieces can be taken out easily and not cutting
too deep, making sure the material keeps its strength while cutting.
Sometimes this balance doesn’t exist, meaning th
at this material can’t be cut
through with satisfactory result.
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