S Class 3 User’s Manual
Basic operation 2-20
Determining the values of the FlexCut parameters is done in two main steps. The first step is
determining the ‘fixed’ pressure values. The second step is determining the length parameters
empirically.
➢ Step 1
First go to the knife pressure test as described in section 2.3.2. Determine the pressure that is
required 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 required pressure has been determined, turn the knife in a little more to check if it still cuts
completely through. If this is the case, turn the knife in a little further. If it does not cut completely
through, turn the knife out as it was. Now lower the knife pressure a little to check if it still cuts
completely through. If this is the case, lower the knife pressure a little again. If this is not the case,
set it at the previous value.
NOTE: Write down the pressure required to cut completely through and do not change
the physical knife depth anymore (unless the knife has worn down a little).
Now, lower the knife pressure correctly to cut through just the vinyl. Write down this value.
➢ Step 2
Set the FlexCut parameters as described in section 2.7.1, using the following values:
• Full pressure: the value that was required to cut completely through the media (determined in
step 1)
• Flex pressure: the value required to cut through the vinyl only.
NOTE: We do not recommend using cutting speeds higher than 400 mm/s (16 ips)
with cutting pressures exceeding 170 g. So, if the full pressure is higher, lower the
FlexCut velocity.
• Full pressure length: 10 mm.
• Flex pressure length: 1 mm.
Perform a test. Check the bridges. If they are too large, perform a test with a lower Flex pressure
length. If they are too small (or none-existent), raise this value.
The FlexCut parameters are now set. If these settings need to be adjusted, try only changing the Flex
pressure length. There is no need to adjust pressure settings unless the knife is wearing 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 does not
exist, and this material cannot be cut through with satisfactory results.
2.7.2.3 Values of the FlexCut parameters
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