IGM M107 is a trimming router bit with down shear geometry, 2 carbide cutting edges (HW) and a guide bearing, designed for template trimming with the fixed template positioned under the workpiece. It is available in three versions with cutting diameters from 12.7 to 19.05 mm and cutting heights from 25.4 to 50.8 mm. For use on handheld routers only. Distributed in Italy by Krollit, official IGM distributor since 2007.
- Geometry: down shear — lower resistance and cleaner cut compared to a straight cutting edge
- Cutting diameter: 12.7 mm or 19.05 mm depending on the version
- Cutting height: 25.4 mm (S8 versions) or 50.8 mm (S12 version)
- Shank: 8 mm or 12 mm
- Guide bearing: included, diameter equal to the cutting diameter
- Possibility to add a bearing on the shank with a stop collar (not included)
- Cutting edge material: micro-grain HW carbide, hardness 93.5 HRA, thickness 2 mm
- Red PTFE Teflon coating: protection against corrosion, resin and burn marks
- Anti-kickback technology compliant with EN 847
- Laser-marked shank with parameters and “K” point for optimal positioning in the collet
- Resealable packaging with specification label
- Exclusive use: handheld routers
Who uses the M107 and what it is used for
The IGM M107 cutter is chosen by carpenters and craftsmen working with templates for curved shapes, profiled edges and coated panels. The down shear geometry is preferred when the workpiece tends to chip with straight cutters, especially on edge-banded MDF, laminate and artificial stone. The D12.7 mm version with 25.4 mm cutting height is used for trimming thin materials and tight curved edges. The D19.05 mm version with 50.8 mm cutting height and 12 mm shank handles thicker panels up to 50.8 mm in a single pass. The possibility of adding a second bearing on the shank allows templates to be fixed either above or below the workpiece without changing the tool.
Who the M107 is suitable for
| Profile |
Compatibility |
Reason |
| Carpenter using a handheld router with templates |
Suitable |
Bearing included, down shear reduces chipping on curved MDF and laminate shapes |
| Craftsman working with coated panels, plastic and artificial stone |
Suitable |
Compatible with softwood and hardwood, plywood, DTD, MDF, laminate, plastic and artificial stone |
| Operator using a CNC router table |
Not suitable |
The M107 is designed exclusively for handheld routers |
Not suitable for: CNC router tables and CNC routers — the manufacturer specifies exclusive use on portable handheld routers.
IGM technology and build quality
The micro-grain carbide cutting edges are brazed and sharpened on 5-axis CNC centers with automatic balancing. Hardness is 93.5 HRA, thickness 2 mm with a minimum of 1 mm for reduced-diameter versions. The increased thickness allows multiple resharpening cycles without loss of cutting quality. The red PTFE Teflon coating reduces friction, protects against resins and adhesives, and keeps the edge sharp for longer compared to uncoated cutters. Each cutter passes an automated quality control that detects deviations from the required parameters.
Technical specifications — all variants
| Version |
Shank S (mm) |
Diameter D (mm) |
Length L (mm) |
Cutting height I (mm) |
Ø Bearing B (mm) |
| M107 D12.7x25.4 L77 |
8 |
12.7 |
77 |
25.4 |
12.7 |
| M107 D19.05x25.4 L79 |
8 |
19.05 |
79 |
25.4 |
19 |
| M107 D19.05x50.8 L104 |
12 |
19.05 |
104 |
50.8 |
19 |
Common specifications for all versions
| Number of cutting edges (Z) | 2 |
| Geometry | Down shear cutting edge |
| Rotation | Clockwise, right-hand rotation |
| Cutting edge material | Micro-grain HW carbide |
| Cutting edge hardness | 93.5 HRA |
| Cutting edge thickness | 2 mm |
| Coating | Red PTFE Teflon |
| Anti-kickback | Yes, compliant with EN 847 |
| Guide bearing | Included |
| Shank marking | Laser: code, D, I, S, max RPM, K point |
| Packaging | Resealable case with specification label |
| Workable materials | Softwood and hardwood, plywood, DTD, MDF, laminate, plastic, artificial stone |
| Use | Handheld routers only |
Frequently Asked Questions
What is the difference between down shear geometry and a straight cutting edge?
The down shear cutting edge pushes the fibers downward during cutting, reducing resistance and producing a cleaner edge without chipping. With straight cutting edges, on materials such as edge-banded MDF or laminate, the top edge tends to chip more easily. The advantage is most noticeable on tight curves and cross-grain materials.
Which version should I choose between D12.7 and D19.05 mm?
The D12.7 mm version is suitable for trimming thin materials and tight curved profiles where a larger diameter cannot fit into the curve radius. The D19.05 mm with 25.4 mm cutting height is the standard version for panels up to 25 mm. The D19.05 mm with 50.8 mm cutting height handles thick panels up to 50.8 mm in a single pass, with a 12 mm shank for greater stability.
Can a second bearing be used on the shank?
Yes, an additional bearing can be mounted on the shank with a stop collar, not included in the supply. This allows templates fixed under the workpiece to be used by running the shank bearing along the template, while the tip bearing follows the already trimmed edge.
Which materials does the M107 work on?
The M107 is compatible with softwood and hardwood, glued wood, plywood, DTD, MDF, laminate, plastic and artificial stone. The PTFE Teflon coating reduces resin and adhesive build-up when machining synthetic materials.
Can the cutter be resharpened?
Yes. The HW cutting edges are 2 mm thick, sufficient for multiple resharpening cycles. The manufacturer recommends resharpening at a specialized center to maintain the down shear geometry and cutter balance. The laser marking on the shank includes the original parameters as a reference for the sharpening service.
What are the recommended maximum RPM values?
The recommended maximum RPM values are laser-marked on the shank of each individual cutter together with the other key parameters. Always check the marking on the shank before use and do not exceed the value indicated for your specific version.
