Kreg Trim Router Circle Guide Accessory for 3-1/2-in. to 52-in. Circle Cutting (KRTCG100)
Kreg Trim Router Circle Guide Accessory for 3-1/2-in. to 52-in. Circle Cutting (KRTCG100)
Key Features
Overview
The Kreg KRTCG100 Trim Router Circle Guide is a trim router circle guide designed for cutting accurate circles and improving control during edge routing. Model Number: KRTCG100. If you already own a trim router and need a straightforward way to make clean round cuts without building a shop-made jig, this accessory gives you an adjustable, repeatable setup that is easier to dial in and easier to handle.
This is a router accessory designed for circle cutting and edge profiling in woodworking. Its biggest selling point is range. The guide is built to create circles from 3-1/2 inches to 52 inches in diameter, which covers a lot of real projects: speaker cutouts, small round panels, stools, tabletops, signs, and template work. Instead of guessing radius off a scrap strip, you get a purpose-built guide that helps keep the router tracking consistently around the pivot point.
Kreg also built this guide to do more than one job. When you are not cutting circles, it adds extra stability and control for edge profiles. That matters because trim routers are compact and handy, but they can feel twitchy on narrow stock or when you are balancing over an edge. The larger base and added handle give you a steadier platform, which helps reduce tipping and makes the cut feel more controlled.
The construction is practical. The guide is made from impact-resistant polymer and uses a clear base for better visibility at the work surface. In plain terms, you can see more of your layout and keep better track of where the bit is working. The integrated handle is not just there for comfort. It gives you a secure grip and a second control point so you can guide the router more smoothly through long arcs and full-circle cuts.
For layout flexibility, the Kreg KRTCG100 Trim Router Circle Guide uses pin holes that allow both interior and exterior diameter cutting. That is useful when the finished size depends on whether you are keeping the inside piece or the outside piece. It also makes the guide more versatile for different shop tasks, from cutting openings in panels to shaping round workpieces from larger blanks.
Compatibility is another reason this accessory makes sense. It is designed to work with most major trim routers, including the Kreg 20V Ionic Drive 1/4 inch Trim Router. If you are already invested in a trim router platform and want more capability without stepping up to a larger router table setup, this is the kind of accessory that expands what your router can do without adding a lot of bulk.
This guide is best suited for woodworkers, cabinet installers, furniture builders, and serious DIY users who want cleaner results than a homemade jig usually delivers. If your work regularly involves round cuts, repeated sizes, or edge-routing where extra base support helps, this is a smart add-on. It is especially useful for anyone using a trim router for detailed woodworking who wants better precision, better stability, and less fiddling at setup time.
Dial In Precise Circle Cuts
This trim router accessory is built to make circle cutting more repeatable and less improvised. The long adjustable guide gives you a defined radius setting, so you can spend less time making shop jigs and more time cutting usable parts.
- Cuts circles from 3-1/2 inches to 52 inches in diameter
- Designed for clean, precise, repeatable circular routing work
- Supports both interior and exterior diameter cutting
Better Stability with a Trim Router
Trim routers are great for detail work, but they can feel light and a little nervous when you are balancing on an edge or swinging through a large arc. The oversized clear base and integrated handle help calm that down by giving you more support and a more secure grip.
- Integrated handle reduces fatigue during extended use
- Clear base improves visibility at the cut line
- Impact-resistant polymer construction is built for regular shop use
Key Specifications
| Circle Cutting Range | 3-1/2 in to 52 in diameter |
|---|---|
| Compatible Tool Type | Trim routers |
| Cutting Modes | Interior and exterior diameter cutting |
| Body Material | Impact-resistant polymer |
| Base Type | Clear base |
| Handle | Integrated grip handle |
| Brand Compatibility | Most major trim routers |
| SKU | KRTCG100 |
Compatibility
Built For
Pro Tip
When you are cutting to a finished size, decide up front whether the final part is the inside piece or the outside piece and use the correct pin-hole setup for interior or exterior diameter cutting. That saves you from ending up one bit-width off at the end of the cut.
Tool Nut's Take
Kreg KRTCG100 Trim Router Circle Guide Adds Real Capability to a Trim Router
If you use a trim router for woodworking and want cleaner circles without building a jig every time, this accessory is the easy answer.
- Who it's for: Woodworkers, cabinet guys, furniture builders, and serious DIY users who cut circles or want more control during edge routing.
- Why it stands out: The big range from 3-1/2 inches to 52 inches, plus the integrated handle and clear base, make it more useful than a basic pivot arm.
- Worth knowing: This is an accessory, not a router. It makes the most sense for users who already own a compatible trim router and want better precision from it.
Common Questions
- What size circles can this guide cut? The Kreg KRTCG100 Trim Router Circle Guide cuts circles from 3-1/2 inches to 52 inches in diameter.
- Is this only for circle cutting? No. It also provides added stability and control for edge profiles when you are not cutting circles.
- Will it fit every trim router? It is designed to work with most major trim routers, including the Kreg 20V Ionic Drive 1/4 inch Trim Router.
- Can it handle inside and outside cuts? Yes. The pin-hole setup allows both interior and exterior diameter cutting.