MRR112 Amana Tool 1/4" Round Over Bit with 3/16" Bearing

The Amana Tool MRR112 1/4" Round Over Bit is a great bit to have in the shop when you want to soften edges and give your projects a smoother, more finished look. A 1/4" round over is a nice all-around profile that adds comfort in the hand while still keeping a clean, refined appearance.

We use this router bit for adding a round over to charcuterie boards and tables. It’s a simple detail, but it makes a big difference in how the finished piece looks and feels. Softening a sharp edge helps make projects feel more professional, more comfortable to handle, and more complete overall.

With its 2-flute design and compact profile, this bit is a solid choice for woodworkers looking to add a consistent rounded edge to smaller and medium-sized projects.

Why We Like It

• Adds a smooth, clean 1/4" round over

• Great for charcuterie boards, tables, and other woodworking projects

• Helps soften sharp edges for a more comfortable finished piece

• Creates a more polished, professional look

• A useful bit for both small projects and furniture work

• Great for adding a subtle, classic edge profile

Specifications

• Model: Amana Tool MRR112

• Radius (R): 1/4"

• Cutting Height (B): 13/32"

• Shank (d): 1/4"

• Overall Length (L): 1-7/8"

• Flutes: 2

What’s Included

• One (1) Amana Tool MRR112 1/4" Round Over Bit with 3/16" Bearing

What We Use It For

We use this router bit for adding a round over to:

• Charcuterie boards

• Tables

• Other woodworking projects that need a softer finished edge

A 1/4" round over bit is a great choice when you want to remove a hard square edge and create a more comfortable, finished profile without making the edge look too oversized.

Important Use Note

Please note: there is no warranty on this bit.

To help reduce the chance of damage:

• Avoid applying too much force while routing

• Excess pressure can put strain on the bearing and lock ring

• Reduce RPM speed by 30 to 50% 

• Use a steady, controlled approach during the cut

This bit performs best when used with lighter pressure and a more controlled feed.

Frequently Asked Questions

What is a 1/4" round over bit used for?
A 1/4" round over bit is used to soften and round the sharp edge of a board or furniture piece. It creates a smooth profile that looks clean and feels more comfortable in the hand.

What projects is this bit best for?
This bit is great for charcuterie boards, tables, shelves, signs, boxes, and general woodworking projects where you want a classic rounded edge.

Why use a 1/4" round over instead of a smaller or larger size?
A 1/4" round over is a nice middle-ground size. It’s noticeable enough to improve comfort and appearance, but still subtle enough to work well on a wide range of projects.

Can I use this bit in a standard router?
Yes — this bit has a 1/4" shank, so it fits routers that accept 1/4" shank router bits.

Is this a good bit for charcuterie boards?
Yes — this is one of the ways we use it in our own shop. A 1/4" round over gives charcuterie boards a smoother, more comfortable edge and a more finished look.

Why is there no warranty on this bit?
This bit can be damaged by too much force or excess pressure on the bearing and lock ring, so it is sold without warranty. A lighter, more controlled approach is recommended.

What should I avoid when using this router bit?
Avoid forcing the cut or putting too much pressure on the bit. Keeping the cut controlled helps reduce stress on the bearing assembly and can help extend the life of the bit.