Circle cutting jig is great for making speaker cutouts
Cuts 256 different circles from 2-1/4 to 18-3/16-inches in diameter
Precision-drilled pivot holes keep pins in selected holes
Easily read scale is calibrated for a 1/4-inch router bit
Editorial Review:
If you're a speaker builder, then you need this tool! Introducing the Jasper Audio Circle Jig precision router attachments. These jigs convert your plunge router into a precision circle cutting device. The Model 200 will cut circles and mortises in 1/16" increments from 2-1/4" to 18-3/16" in diameter. Model 400 is perfect for tweeters and small midranges, cutting holes from 1" to 7-1/2". This makes it the ideal tool for creating highly accurate cutouts in custom built speaker cabinet baffles. Designed for use with MDF, plywood, particle board, solid woods and plastic sheet. Mounts directly to the base of 19 different models of plunge routers including Bosch 1613 and 1615, DeWalt 621 and 625, Freud FT2000E, Hitachi M8V, TR12 and M12V, Porter Cable 690 series and 7539, Skill 1823 and 1835, and all Sears, Ryobi and Makita models. Made in the U.S.A.
The Jasper 200J Model 200 Circle Cutting Jig for Plunge Router allows you to make the clean circles that are needed in making speaker cutouts. The cutout sizes provided by the jig range in 1/16-inch increments from 2-1/4 inches to 18-3/16 inches. Its easy-to-read scale is calibrated for a 1/4-inch router bit, and this jig has precision-drilled pivot holes that hold pins in selected holes.
Customer Reviews:
Avg. Customer Rating: 4.5 / 5.0
Works well This product is designed to work with plunge routers. While it may be possible to use it with fixed base routers, I think it would be tricky and might compromise the tool's built in accuracy. A guide for selecting mounting holes for many routers is printed on the back of the shipping card, and was easy to follow. The product includes a pin and insert to allow centering on your router's base. In use, some things worth mentioning: It is imperative you attach your workpiece to a substrate, both inside and... more info
Jasper 200J Jig Bought one of the $180 Routers to go with this Jig, which isn't calibrated for the provided scale - nothing simple math can't take care of. Also have gone through 4 X $15 bits in short order. They keep breaking at the stem. It is imperative that you keep the router flat with constant even down pressure while using this product. Overall, I don't know a better way to get a near perfect circle.
No fine adjustment This product works ok if you need a hole that is not too accurate. But if you need a 5" hole this thing may cut .03 under and there is no way to adjust it to make up for it. I needed to fit a steel plug into a hole and this tool cannot make a hole for it. I'll probably end up having to "egg shape" the mounting screw holes so I can fine tune my hole size. Also it would be very nice if the hole size markings were on both sides of the plate. As it is, the sizes are on the bottom making it difficult to see... more info
It works great I used this jig to cut holes for some speakers I built. It works really well to hold the router in a circle pattern. Just a couple things to note: 1) If you drill the pilot hole for the 1/8" pin that fits into the jig at exactly 1/8", then it's hard to get into/out of the material you are cutting. But if you make the pilot hole 1/64" larger, then the pin will fall through the hole and out of the jig. I ended up drilling the pilot hole 1/64" larger and putting masking tape below the hole to keep the pin... more info
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