MC Etcher is our new diamond drag bit. It is perfect for fine line engraving on composites, metals, and glass.
MC Etcher is spring-loaded which makes it easy to engrave on uneven surfaces. The spring, which sits under the tip, allows it to adjust as it moves over the surface of your material.
MC Etcher is designed to drag over the surface of the material, not cut with flutes like a normal endmill.
IMPORTANT: The tool does not rotate so the spindle needs to be turned off.
Ships in a reusable storage tube.
MC Etcher is available in three variants:
- Individual 90-degree tip
- Individual 120-degree tip
- Combo pack: 90-degree tip (1 ea) and 120-degree tip (1 ea)
MC Etcher has a 1/4" Shank
The 90-degree tip has better penetration in very hard or anodized materials.
The 120 deg tip provides slightly wider lines in softer materials such as fiberboard but has less penetration in harder materials.
Recommended Diamond Drag Bit Speeds and Feeds
We've tried the MC Etcher with a variety of materials and we don't find a lot of difference between the speeds and feeds that work for each material. We recommend these as a starting point:
- Feedrate: 60 in/min
- Plungerate: 30 in/min
- Cut Depth / Compression: .015"
Drag Bit Toolpaths
You have a couple of options to generate a toolpath for a drag engraver:
- Use Carbide Create, or any other 2D CAM program, to generate contour toolpaths and pocket toolpaths with an RPM of zero (or, just leave your spindle turned off)
- Use the Engrave toolpath in Carbide Create Pro to generate outline and fill toolpaths for drag engraving.