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Butterfly Template
Circle Guide
Base Plates
Metric Applications
Download Compatibility Charts
Circle Guides
Base Plates
Download Product Instructions
M100 Download Instructions
M200 Download Instructions
M240 Download Instructions
M270 Download Instructions
M300 Download Instructions
M350 Download Instructions
M375 Download Instructions
M400 Download Instructions
M500 Download Instructions
M525B Download Instructions
M575B Download Instructions
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      Contact Us
4800 West 34th Street C22
Houston, Texas 77092
Phone: (713) 681-9912
Fax: (713) 681-0576
Customer Service Available
9:30 AM to 3:00 PM
Monday thru Thursday

Central Standard Time
     We accept the following cards:
     We also accept:
Our circle guides are shown mounted on routers for illustration purposes only. Routers are not included with our products.
Welcome to Jasper Tools
Jasper Tools

Since 1998, Jasper Tools has been designing and manufacturing high quality router accessories. Our patented calibrated circle guides have become the standard for making exact circular cuts without a trial. They have been used for making precision circular cuts for speakers, flush mounting speakers, small acoustic ports, lazy susans, circular tabletops, guitars, rockets, telescopes, clocks and many other applications that require circular cuts.

We also manufacture router base plates that convert the base of many routers to receive Porter Cable style guide bushings.

Our Butterfly Template is designed for repairing damaged furniture or adding a decorative inlay to new furniture.

New Pro Series Circle Guides!!

Our new Pro Series Circle Guides are manufactured in virtually unbreakable polycarbonate. All Circle guides are available in the Pro Series.

Our Products
     Butterfly Template
Model-100 Butterfly Template
Butterfly Template
     Circle Guide
Model-200 Circle Guide
Circle Guide
     Base Plate
Model-575 Base Plate
Base Plate
Model-350 Pivot Plate
Pivot Plat
Guide bushing shown in the picture
does not come with the plate
Model-270 Circle Guide
Circle Guide
Model-500 Base Plate
Base Plate
Model-735 Centering Pin
Centering Pin 
Model-300 Circle Guide
Circle Guide
Model-400 Circle Guide
Circle Guide
Model-240 Circle Guide
Circle Guide
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