Jasper 240 PRO Circle Cutting Router Jig – Polycarbonate Precision Tool for Woodworking, Speaker Building & DIY Projects

I am using a DW625 plunge router, I bought this because I need to create holes of non standard diameters less than 4 " in circle cutout templates. Most other circle cutting jigs do not go less than 3-4 inches.Overall very good jig. Very glad I bought it.Some notes.1) I struggled to match the 2 holes on the 240 jig to the base of the DW625, as the bolt diagram provided did not list the DW625 specifically. However, since there were only two bolt holes for all DeWalts I guessed those were it, However note - the rounded edge of the jig does not match up to the rounded edge of the DW625 - it is rounded edge of jig to flat side of DW625 base.2) Non-intuitive so beware - the scale side of the jig goes face down to work piece. This is because the screw bevels are on the scale side, so to make the jig perfectly flat on bottom the bevels need to be on the work piece side. To get the jig and router into the correct circle diameter pin hole you need to count rows and columns. Not a show stopper, but quite surprising. I even looked at several Jasper videos and photos to confirm this is how it is used.3) Number 2 above may due to the placement of the holes from 1-4 inches, which can be covered by the router base. So it is not easy to get the jig set in these pin positions, but can be done with some time and by feel.4) How to use the centering jig for the 240 jig when attaching to the router is kinda of funky. There are two pins on it, but it is not intuitive which holes in the 240 jig they go into. Lining up the picture of the 240 router bit opening did not give any hints to which holes the centering jig would go into. It was weird in that I could not find the correct holes by experimenting until I inserted the 1/4 in alignment pin (provided) into the centering jig then the centering jig suddenly went into 1 1/16 and 1 3/16 pin holes. I had tried those without the pin insert to no avail. This indicates an incredibly tight fit. Which very nice, Just don't waste time like I did!.My first hole was cut at 3 3/4 in HDF. Measuring afterward on outside diameter of the hole (not the resulting cut out circle) was 3.7490 to 3.7505. The second hole was set to 3 13/16. The outside diameter measured at 3.8055 to 3.8090 around.The resulting cutout circle in my use was 0.5 in +/- less than scale value. So if you need to have the cut out part of the circle be a given diameter it looks like the scale value selected needs to be 2x the 1/4 inch bit diameter higher.Again very glad I got this and recommend to anyone cutting smaller circles.

Works great. It already paid fir itself.

This jig works great and is simple to setup. The only complaint is that the bottom scratches too easily (I cut MDF primarily) and will make it hard to see the measurement marks early.

Cut very accurate circles. Easy to use. Seems a little pricey for a piece of plastic. Cheaper ones made me nervous about them breaking though. Time will tell if this one holds up.

I had this on my wishlist for a while, finally ordered it. There was an issue with the particular unit I received, but after a quick note to the seller, I received a perfect replacement very quickly.This is a great jig to make perfect circles in 1/16" increments without a ton of measuring or trial/error. Very precise.If you are making holes ~4" or larger in diameter and prefer not to drill the tiny pivot hole in your workpiece, you should also pick up the M350 Pivot Plate.

I started my search for a 6" hole saw for corn hole boards, but after seeing the price for a single-use hole saw I started looking for other alternatives. There were already a lot of good reviews for this jig so I ordered one and waited for its arrival. Upon arrival, I immediately set about getting it set-up which was a breeze - it easily connected to my router and the centering pin configuration provided with the jig further insured proper configuration. I made a few practice cuts on some scrap wood and was very pleased with the results. While I ended up spending a little more than I would have for the 6" hole saw, I now have a tool that will provide for numerous other applications!I have found the for thicker wood, that my current bit requires that I cut from both sides which is not necessarily a problem except that unless your pilot hole is perfectly perpendicular to the wood, the two separate cuts will be slightly off - nothing that a little sanding cant fix....or a longer bit. The other point of care is the final cut - unless you secure both the cut-out (the circle) and the main piece, when you get towards the final point of separation, your reference point of rotation can become unreliable - but careful attention or preparation / configuration of the wood can avoid this. In the end neither of these points are directly attributed to the jig itself, but more towards the user and the set-up the user chooses. I am very pleased with the results of the circle cutting jig!

I've had this for only a week or so, and so far have used it only for cutting holes in DIY speaker cabinets. Yeah, placing the pivot pin into the pilot hole can be awkward--especially when the pin falls out of the jig--but I think it's like any tool: the more you use it, the better you get at it. The holes it cut were flawless and were precise. (I used a Whiteside spiral up cut flush trim bit.)My tips:1) Secure the workpiece to your work surface with two-sided tape. I had one cut for which the material shifted near the end of the cut, which is when the piece in which the pivot pin is located is most likely to shift position. If the material is relatively small and clamps would interfere with the path of the jig, be sure to position the tape so that it holds down both the main piece and the cutout circle. That way, neither should shift.2) The pivot pin can be difficult to remove from the workpiece after a cut (at least it was with MDF). I used a needle nose pliers to easily pull the pin out with no evident damage to the pin.3) If possible, route the router's power cable so it travels from above. If the power cable is low, it can get in the way of your work as you spin the jig around. Not a big deal, but dealing with a power cord that's in the way takes your focus from the work at hand.

I can't say enough about the quality of the product and the customer service. Thir efforts to ensure the customer is number one is evident buy the products they manufacture for the customer. I use their products for my business. Very much recommended for others.

what I like: It's easy to produce accurate, repeatable results.Be aware: the template holes for screwing the template to my router were a little bit oversized. I took off the template part way through a job to complete another task. I then reattached the jig. A very small change in the screw position attaching the jig to the router resulted in the radius being slightly different (about 0.02 inches for my 17 inch circle?) Not huge, but enough to be a bit of a problem for my application involving making many identical arcs. As long as the jig was not changed, results were repeatable to a higher standard which caused no problems for me.