K390-534
A direct replacement for Summa 390-534, with no holder modification needed. Single edge drag blade for kiss cutting on Cutworx Apex, Esko, Gerber / MCT, and Zund flatbed cutting systems.
Sold individually.
Direct OEM replacement
The K390-534 matches the form, fit, and geometry of the Summa 390-534. Drop it into the same holder and dial in your parameters from there. No modifications needed.
What is kiss cutting?
Kiss cutting means the blade cuts through the face material (the vinyl, film, or label stock) without cutting through the liner underneath. The finished piece peels cleanly from the sheet. This blade is built specifically for kiss cut work. It is not a through-cut blade.
Fine Grain Tungsten Carbide
The K390-534 is made from fine grain tungsten carbide. The finer the grain, the sharper the edge it can take and the longer it holds that edge under production conditions. For kiss cut work on vinyl and film, that edge retention translates to cleaner cuts and more consistent liner protection across a shift.
Common questions
What do the cutting angle and wedge angle mean?
The K390-534 features a 35° cutting angle and a 40° wedge angle. The 35° cutting angle helps the blade track smoothly through the material with reduced drag, while the 40° wedge angle provides the ideal balance of sharpness and edge durability. Together, they deliver clean cuts, excellent detail reproduction, and consistent liner protection in demanding production environments.
How do I know this fits my machine?
The K390-534 is a direct replacement for Summa 390-534. If you are running that part number now, this is the replacement. Not sure? Contact us before you order. We know these machines.
What materials does it cut?
This blade handles Self Adhesive Vinyl, Polycarbonate, Polyester, Masking Film, Window Prep Vinyl, Magnetic Media, Transfer Paper, and 3M VHB. For tougher through-cut work or thicker substrates, a different blade geometry is likely a better fit. Reach out and we can point you in the right direction.
How do I know when to replace it?
Cut quality tells you when. If vinyl is dragging instead of peeling cleanly, edges are fuzzy, or the blade is not releasing from the liner the way it should, it is time to swap. Do not wait until it stops cutting entirely.
Getting the most from your cutting table
A fresh blade is a good start. But if you are going through blades faster than expected, or cut quality has become inconsistent, the blade is rarely the whole story. Cut depth, speed, pressure, and machine condition all affect how long a blade lasts and how clean it cuts.
It is worth asking: When was your machine last serviced? Are your parameters dialed in for this material? Is this the right blade geometry for what you are cutting? Could your operators use time with someone who runs these machines every day?
Flatbed Tools offers machine service, preventive maintenance, operator training, and workflow consulting. If something is not cutting right, reach out. We have probably seen it before.