Jasper 390 XLC XL Circle Guide for Cordless and Compact Routers
For orders outside of the united states please Email us: jasperprecisiontools@gmail.com
Jasper 390 Precision Circle Guide Cut large, accurate circles with confidence and control. The Jasper 390 is designed for larger diameter circle cutting with compact and trim routers. It supports both fixed-base and plunge-base configurations, making it a flexible option for furniture makers and speaker builders working at larger scales. --- ## What This Guide Is Designed For The Jasper 390 is engineered to handle larger circle diameters while maintaining precise, repeatable results. Ideal uses include: • Furniture components with...
Jasper 390 Precision Circle Guide
Cut large, accurate circles with confidence and control.
The Jasper 390 is designed for larger diameter circle cutting with compact and trim routers. It supports both fixed-base and plunge-base configurations, making it a flexible option for furniture makers and speaker builders working at larger scales.
---
## What This Guide Is Designed For
The Jasper 390 is engineered to handle larger circle diameters while maintaining precise, repeatable results.
Ideal uses include:
• Furniture components with large visible circular surfaces
• Table tops, panels, and decorative discs
• Speaker openings requiring larger diameter cutouts
• Projects where accuracy matters at larger scales
VIEW THE FULL COMPATIBILITY GUIDE
If you need to cut smaller circles using the same router type, see the Jasper 290.
---
## Why Choose the Jasper 390?
• Precision-first layout for large-diameter circle control
• Repeatable results without trial-and-error
• Compatible with both compact fixed-base and plunge routers
The Jasper 390 is part of the Jasper system — designed to match the right guide to your router and your work, not force one approach across every project.
---
Recommended Router Bit
Choosing the right router bit is just as important as choosing the right guide, especially when cutting large or highly visible circles.
J601 Up-Cut Spiral Bit
A reliable choice for general woodworking and structural circular cuts. Performs well in solid wood, plywood, and MDF where finish quality on both faces is not the primary concern.
J603TT Double-T Compression Bit
Recommended for furniture-grade work and other high-value or visible materials, including large speaker openings, where clean edges on both faces of the cut matter. Especially useful when working with solid hardwoods, veneered panels, or finished surfaces.
Upgrade for Furniture-Grade Results
When cutting large decorative discs or highly visible surfaces, a finish-focused upgrade can further reduce surface marking and edge cleanup.
Furniture Finish Upgrade Bundle
Includes the J603TT Double-T Compression Bit and the M350 Blemish-Free Pivot Plate, packaged together for convenience. This upgrade is designed to support clean edges and blemish-free results when the cut-out circle itself is the finished piece.
The M350 Blemish-Free Pivot Plate replaces a traditional point-style pivot, helping prevent center-point marks on the finished disc. This makes it especially valuable when creating table tops, decorative panels, or other circular components where the center surface remains visible.
---
## Standard vs PRO Version
**Standard Version**
Designed for most woodworking and speaker-building projects, offering the same accuracy Jasper is known for.
**PRO Version**
Made from premium polycarbonate for maximum durability and long working life — ideal for frequent use, demanding shop environments, or anyone who wants a virtually unbreakable tool.
---
## Circle Capacity
Designed for larger circles than the Jasper 290 while maintaining consistent accuracy.
For full-size plunge routers, see the Jasper 300+ XLC.
---
## Recommended for Best Results
Your guide selection determines accuracy.
Your accessories determine finish quality.
**Router Bit Options**
• **J601 Up-Cut Spiral Bit**
A versatile choice for circular work and general routing tasks.
• **J603TT Double-T Compression Bit**
Recommended for plywood or finished panels where clean edges on both faces matter.
---
## Surface Protection
For finished panels or visible surfaces, the M350 Blemish-Free Pivot Plate helps prevent surface marks at the center pivot point.
---
## How the Jasper 390 Fits Into the Jasper System
• Larger-capacity option for compact routers
• Sister guide to the Jasper 290
• Bridge between compact and full-size router projects
If you’re unsure which Jasper guide is right for you, start with the
Which Jasper Circle Guide Do I Need? guide.
---
## Built for Confidence
Jasper circle guides are trusted by woodworkers who need reliable, repeatable accuracy — even on larger workpieces.