Lawn Mower Blade Guide
Depending on the shape of your mower blade, we have developed different models to obtain the desired cutting edge. Below are some blade descriptions along with our recommended sharpener models.
About the Angles and Edges
If the underside of the cutting edge on your blade is not flat to a table, or parallel to the ground or mounting section of your blade, that will alter the angle of your grind. A sure sign of this is if you lay the blade on a flat surface and it wobbles or won’t sit flat. If you have a blade like that, you will want one of the 5005 models. The 5005 and 5005EXT give you the ability to easily adjust the grinding angle to compensate for the altered cutting edge angle. You do not need an “EXT” version of any model unless you have counterclockwise mower blades. If you are unsure about your blade geometry, please contact us and we will help you choose the right model for your scenario.
Standard Mower Blades
Gator Mulching Blades
Gator mulching blades look more complex because of the mulching fins. But the cutting edge angle is similar to a standard blade. So the Model 5002 will give you a 30 degree sharpened edge. We have had some customers who prefer the 35 degree setting to keep the factory edge on their Gator blades. If you want more angle options and versatility, check out the Model 5005.
Bi-level Mulching Blades
Bi-level mulching blades are a little more tricky. The outside cutting edge is parallel to the mounting surface. But the inside mulching section edge is raised and stamped at a different angle. We created the Model 5000 specifically to handle these. With a simple flick of the wrist, you can switch between the angle needed to get a 30 degree grind on the outside edge or the inside mulching edge.
***** If the underside of the outer cutting edge is not flat or parallel to the ground or the mounting section of your blade, it will alter your grinding angle. If that is the case, you will need a Model 5005 or 5005EXT to compensate for the altered cutting edge angle. *****
Twisted High Lift Blades
We used to refer to these as high lift blades. But some mower blades are considered high lift without having the twisted end that makes these unique. That twist on the end alters the angle of the cutting edge. Since the cutting edge angles upward and isn't parallel with the mounting surface, there needs to be an adjustment to compensate for that angle. The Model 5005 gives you the angle adjustments needed to fine tune your grinding edge to your preference. We see this type of blade on a lot of John Deere mowers. But there are other brands that incorporate a twisted high lift blade as well.
Honda Mower Blades
Honda Quadracut and MicroCut Twin Blade sets have a design that slightly rotates the blade when mounted in our jigs. We have fabricated an adapter that will work with these blades to correct the mounting position in our jigs. The cutting edge is parallel to the mounting surface of these blades. So if you want a 30 degree edge, we recommend a Model 5002 along with the Honda Adapter. Keep in mind that the adapter will work in any of our jigs. So if you have some other blades like the ones above, you can get the model you need for those and still use the adapter for your Honda blades.
*PLEASE READ BELOW*
*This adapter will work with Honda blades that have part numbers starting with VH7- and VL0-.
*We have learned of some Honda Twin Blade sets that have a different geometry. These blade part numbers start with VK6- and will not work with this adapter. We are working on a solution, but do not have one ready for production yet.
Counter-Rotating Mower Blades
Some mowers use blades that rotate in the opposite direction. We have heard these referred to as left-hand, counterclockwise, and counter-rotating blades. These will have the cutting edge on the other side of the blade. To adjust for this, we have made EXT versions of each of our models. These models have an extended upper guide arm. This gives you the extra range of motion needed to reach the cutting edge of your counter-rotating blades at the the bottom of the jig. We have seen these types of blades on many Walker mowers. But they are not exclusive to that brand.
Blades With Potential Issues
We have encountered some mower blade styles that have issues being mounted in our vise. If you have one of these, you should check in with us first.
- Some Toro and Snapper mower blades have raised edges on the sides in the center mounting area. This causes issues but can be overcome by backing the vise screws out to raise them up so the blade will fit under them.
- Dixie Chopper blades with the X—Blade system have raised centers that are stamped at an angle. This causes mounting issues in our vise.