K29
A direct replacement for the Zund Z29 (3910319), Kongsberg/Esko BLD-SF429 (i-429 / G42458315), Gerber MCT SE29 (895029), Summa 500-9814, and Colex T00428, with no holder modification needed. Single edge oscillating flat stock blade for through cutting on Zund, Kongsberg, Esko, Gerber / MCT, Summa, and Colex flatbed cutting systems.
Sold individually.
Direct OEM replacement
The K29 replaces the Zund Z29 (3910319), Kongsberg/Esko BLD-SF429 / i-429 / G42458315, Gerber MCT SE29 / 895029, Summa 500-9814, and Colex T00428. Same form, same fit, same geometry. No holder modification needed to make the swap. If you are running any of those part numbers and need a replacement, the K29 drops right in.
What is oscillating through cutting?
An oscillating blade moves up and down at high speed as it cuts, rather than dragging through the material. This lets it work through thicker, denser stock where a drag blade would deflect or stall. Through cutting means the blade cuts completely through all layers, including any backing. The cut piece separates fully from the sheet. For corrugated board, foam, and thick rigid materials where full separation is the goal, oscillating through cutting is the right approach.
Fine grain tungsten carbide
The K29 is made from fine grain tungsten carbide. Finer grain structure means a sharper, more consistent edge and better wear resistance compared to coarser carbide grades. For an oscillating blade running through corrugated board, foam rubber, and similar abrasive stock repeatedly, edge retention matters. More cuts per shift before replacement means lower cost per cut and fewer stops mid-run.
Common questions
How do I know this fits my machine?
The K29 is a confirmed replacement for the Zund Z29 (3910319), Kongsberg/Esko BLD-SF429 (i-429 / G42458315), Gerber MCT SE29 (895029), Summa 500-9814, and Colex T00428. If your machine currently uses any of those part numbers, the K29 fits the same holder without modification. Not sure? Contact us before ordering.
What materials does it cut?
The K29 is rated for corrugated board, foamboard, folding carton, felt, leather, display board, foam rubber, carpet, sandwich board, honeycomb, sandblasting mask, PET acoustic felt, varnish blankets, and 3M VHB. For thin films, labels, or applications where kiss cutting is needed, a different blade geometry is the better call. Not sure which is right for your material? Reach out and we can help.
What do the two angles on the K29 mean?
The K29 features a 45 degree cutting angle and an 86.3 degree wedge angle. The 45 degree cutting angle helps the blade track smoothly through the material with reduced drag. The 86.3 degree wedge angle provides the right balance of sharpness and edge durability for repeated through cutting on thick materials. These are two properties of the same blade, not two configurations.
How do I know when to replace it?
Watch cut quality, not hours. When edges start tearing rather than cutting clean, when the blade deflects in corrugated, or when the machine needs more force to complete a cut, it is time to swap. Carbide holds up well, but oscillating work through thick material is demanding. Do not run a dull blade through good stock.
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.