CMT Roundover Bit - 838.190.11
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AmazonCMT 838.190.11 Roundover Bit, 1/4-Inch Shank, 1/8-Inch Radius
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eBayCMT 838.190.11 Roundover Bit, 1/4-Inch Shank, 1/8-Inch Radius, Carbide-Tipped
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CMT 838 Round Over Bit S-6.35 D-19.1 I-12.7 R-3.2 Price is Inc VAT@20%Free delivery in 1–3 days£38.10Visit shop →
CMT Roundover Router Bit - 3.2mm radius x 1/4 shankFree delivery in 1–3 days£38.62Visit shop →
Product Information
Full details
The CMT Roundover Bit (838.190.11) is an essential tool for woodworkers looking to add professional, decorative profiles to the edges of their projects. Designed for precision and safety, this bit is ideal for hobbyists and professionals who want to create clean, rounded edges with an elegant top-edge bead. While it provides exceptional results on most woods, users should ensure their router speed is correctly calibrated for the 3/4-inch diameter to prevent burning.
All features
| Model Part Number | 838.190.11 |
|---|---|
| Brand | CMT |
Extended Product Information
FAQs
Can I use this bit on metal?
No, this bit is designed specifically for wood and wood-based composites.
What is the primary benefit of the Delrin bearing?
The Delrin material is softer than metal, which prevents it from leaving scratches or pressure marks on your workpiece.
Does this bit require a specific router size?
This bit fits standard router collets that accommodate the specific shank size provided in your tool's manual.
How do I maintain the Orange Shield coating?
Keep the bit clean by wiping it with a resin remover after use and avoid abrasive cleaning pads that could strip the coating.
Is this bit suitable for beginners?
Yes, its anti-kickback design makes it a safer choice for users developing their routing skills.
Troubleshooting
The wood is showing burn marks
Reduce your feed rate or increase router speed; ensure you are not lingering in one spot during the cut.
The bearing is not spinning freely
Clean the Delrin bearing with a light degreaser or compressed air to remove wood dust and resin.
Rough edge finish or tear-out
Check if the carbide edge has dulled and ensure you are routing in the correct direction relative to the grain.
Pros and Cons
Pros
- High-quality carbide construction for long-lasting sharpness
- Anti-kickback safety features integrated into the bit geometry
- Non-stick coating prevents gumming and pitch accumulation
- Delrin bearing protects the workpiece from burn marks
Cons
- Requires proper feed speed to avoid wood burning
- Limited to specific edge profiles due to fixed geometry
- Must be used with a compatible router setup
Setup, Compatibility & Care
To set up this bit, insert the shank into your router collet and tighten securely, ensuring the bit is seated deep enough for stability but not touching the bottom of the collet. For care, always inspect the Delrin bearing before use; if it is clogged with debris, clean it with a light solvent to ensure free rotation. After each project, clean the bit with a resin remover to maintain the effectiveness of the Orange Shield coating. Store the bit in a protective case to prevent damage to the carbide cutting edges.