K46
A direct replacement for the Esko BLD-SF346 (i-346 / G42458406), Gerber MCT SE346, and Zünd Z46 (3910315 / 4800073), with no holder modification needed. Single edge drag blade for through cutting on Zund, Esko, Gerber / MCT, and Summa flatbed cutting systems.
Sold individually.
Direct OEM replacement
The K46 replaces the Esko BLD-SF346 (also sold as i-346 and G42458406), the Gerber MCT SE346, and the Zünd Z46 (part numbers 3910315 and 4800073). Same form, same fit, same geometry. No modifications to your holder or toolhead needed before you get back to cutting.
What is through cutting?
Through cutting means the blade cuts completely through all layers of the material, including any backing or liner. The cut piece separates fully from the sheet. The K46 is built for through cut work across a wide range of stock, from foamboard and corrugated board to carpet, felt, honeycomb, and PET acoustic felt.
Fine grain tungsten carbide
The K46 is made from fine grain tungsten carbide. The finer the grain, the cleaner and more consistent the cutting edge. On production runs, that means more cuts per blade before quality starts to drop. On demanding materials like varnish blankets, 3M VHB, or sandwich board, fine grain carbide holds the edge longer than lower-grade alternatives.
Common questions
How do I know this fits my machine?
If your machine uses the Zünd Z46 (3910315 / 4800073), the Esko BLD-SF346 (i-346 / G42458406), or the Gerber MCT SE346, the K46 is the direct replacement. Not sure which blade your machine takes? Contact us before you order. We would rather help you confirm the fit than have you waiting on a return.
What materials does it cut?
The K46 is rated for corrugated board, foamboard, folding carton, felt, leather, display board, carpet, sandwich board, honeycomb, sandblasting mask, PET acoustic felt, varnish blankets, 3M VHB, Zintra, and Fsorb. Cutting something not on that list? Reach out. Some materials sit at the edge of what a drag blade handles well, and we can help you decide if the K46 or a different geometry is the right call.
What does the 45° / 90° cutting angle mean?
The K46 is available in both 45° and 90° cutting angles. The 45° angle is suited for softer, more flexible materials where a shallower blade angle reduces drag and improves cut quality. The 90° angle works better on stiffer materials that need a more vertical cut geometry. If you are not certain which angle your current blade uses, check the part number against the list above or contact us with your machine model.
How do I know when to replace it?
Watch for drag on the leading edge, tearing instead of cutting, or material not releasing cleanly from the sheet. If you are running slower or applying more pressure to get the same cut quality, the blade is the first thing to check. Pull and inspect before assuming a machine or parameter issue.
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.