Jasper 200J Model 200 Circle Cutting Jig for Plunge Router
by Jasper Tools
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List Price: Our Price: $38.88 You Save: $17.06 (30%) Availability: Usually ships in 24 hours Category: Tools See more product details |
Product Details
Manufacturer: Jasper ToolsModel: 200J
Product features:
- 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
- Mounts directly to the base of 19 different models of plunge routers
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Tools and Hardware Reviews of Jasper 200J Model 200 Circle Cutting Jig for Plunge Router
Customer Review: Yes it works with most popular routers, but WHY?
Summary: 3 Stars
My friend and I build speaker cabinets, so we often use routers for cutting large circles; >4".
He thought this was a good idea and bought one. I have used it twice.
Yes, it works as advertised and this price (at Amazon) is one of the best I've seen.
However, I cannot understand why any woodworker worth his salt would buy one.
I give it three stars because it works, but it is ridiculously overpriced, complicated and prone to breakage.
First of all, many routers come with ( or have available) a simple circle cutting attachment that works just fine. If your router does not have such an attachment available, you can easily make one. I make them from brass rod which you can get cheaply at any hobby store.
Further, you can make custom bases that automatically guarantee accurate circles. I make mine from 3/8" ply wood or lexan. Use the existing router base as a template, and make your custom base extension the size of the hole's radius, plus one or two inches. Drill a pilot hole (exactly on the center line) at one half the speaker-diameter, minus 1/2 the bit-size. Each "custom" base costs about 50-cents worth of plywood (or 2-dollars of Lexan) and takes about five minutes to make.
When you need to cut several holes of the same size, attaching a different router base is much faster and easier than fussing with this thing or ANY adjustable jig. For speaker builders, there is almost NO case where we do not have to cut more than one hole of the same size. Even if you are building one-off custom guitar cabs with a single speaker, the home-made base is faster, easier and more accurate simply because you guarantee it works with YOUR router and bits when you build it.
Having said all that, I can think of a case where this would be worth the money;
IF... you have only one router ( and do not want to get another )
IF... you will build many different types of speaker cabs, slowly and only as a hobby,
IF... you cannot find, build or buy any $4 dollar aftermarket or manufactured circle jig,
IF... you are only cutting speaker-holes larger than 4"
THEN this is a recommended product.
Any hole 4" or smaller is more easily done with a hole saw. Typically, we only have to make small holes for tweeters. Then there is usually only one such hole per cab, or there are MANY, as in a line-array. In either case, small holes are easier with the hole saws in a drill-press, so a router jig like this is useless for those.
After building a few speaker cabinets, you will have a collection of bases for the most common speaker-sizes; each one marked with the ROUTER, SPEAKER SIZE, & BIT; for instance, "BOSCH, 12" Celestion, 1/8 bit"
The most common speaker-sizes are 6", 6.5", 8", 10", 12" and 15". You can make ALL SIX of those custom bases for any router in 30 minutes. Label them, hang them on a nail near your work-area. With a screw driver, you can swap bases in less than one minute.
You can switch out bases in one-minute and get working before the guy with this jig has even done his arithmetic.
My plywood bases have NEVER broken in forty years of speaker building, despite being dropped, thrown and borrowed by careless co-workers dozens of times. I doubt that any plastic base would survive so well.
I have demonstrated such jigs to countless musicians and speaker-builders over the decades and have shown people how to make them at least a hundred times. (That's right, I have made and given-away over a hundred circle cutting bases... they are THAT easy and cheap-to-make!)
I am a real fan of ingenious jigs and would gladly support any new product that solved any woodworking problem economically, did the job faster, better or saved me work. This product does none of those things.
Description of Jasper 200J Model 200 Circle Cutting Jig for Plunge Router
These Circle Jigs are clearly marked and simple to use. Each is CNC machined from 1/4" Plexiglass and are pre drilled to fit 19 different models of plunge routers. Instructions and necessary screws are included. Select the jig that fits your needs.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.
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