Circle Cutting Jig for Routers/Trimmers Electric Hand Circle Groove （No Pre-drilled Holes）

Very nice circle cutting jig for the money. I purchased this for a tower stereo speakers project and it performed flawlessly.

This is a well made kit that lacks instructions. So here is what you need to know: 1. The included drill bit is for the pilot hole in the center of the circle. If you want to make a table or another item without a hole going through it, then use the included metal collar with set screw to limit the depth to the length of the pin (pivot point) on the metal bar. 2. The included bit will not fit your router, it is only for the pilot hole. You will need a straight router bit, preferably carbide. 3. The two short rods with threads and a hex socket are not for cutting circles, they are for centering holes/mortises in wood boards. 4. Unless your router fits in the existing holes on the jig, you will need to drill holes (drill press recommended) as needed for your router. The metal pin (used as a temporary router bit) and white plastic disk are used to center the router in the jig, then holes are drilled as needed. Screws are included, use a drill bit just slightly smaller than the thread diameter and they will self-tap with a screw driver and hold the router on the jig. 5. Once the router is mounted on the jig, insert your router bit and attach the metal bar with the pin on it (make sure the pin is on tight) to the grove on the bottom side of the jig (pin facing down) so that the length from the center of the pin to the inner edge (outside cuts) or outer edge (inside cuts) is as desired. Use the plastic knob to lock the bar at the desired position. Tighten firmly, if it slips, the circle with be distorted. I used pliers, but be careful not to break the knob. 6. Set the depth of cut for the router to about a quarter inch or less and make the first cut, rotating the router around the pivot point clockwise. Clear the sawdust. Readjust the bit depth in increments and continue cutting. On the last pass make sure the work can't move if you are making inside cuts or rings. Otherwise the bit may cut into your work. That's it! Good luck.

Good Quality Circle Cutting Jig, worked well for me, hardware supplied was sufficient to connect to my router. No documentation is provided. I understand all makes of routers have different bases. I used my guide bushing base plate with a little modification to attach to my router.

Update: raised the review to 5 stars. I have used this for a year and it is great every time I need it. It came with everything but the router and router bit. Setting up takes a little work and precision as I had to drill holes for the little Bosch router I use. It was easy enough once I got the right size bit. Do yourself a favor and take your time and get the screw holes right. There is no trick, just try out some drill bits to make sure the hole is as close as possible and maybe a tiny bit smaller but not bigger. Good deal on this, happy to have it in the box of router jigs. 2019 I was attracted to the $30 price point and am impressed with the fit and finish. The device it flat and the parts that come with it are all present. There is another review here on how to use it, I’ll study that one, give it a whirl, and report back here. If you are on the fence you may want to give this one a try.

Used to cut MDF moldings to trim out 10" - 16" spiral HVAC ducting. Just have to drill holes to align with your pin router. Does a great job.

Decent price and includes a router bit and all the parts are good quality. The attachment point for the router is oddly tapped when it comes to spacing so I will have to drill my own holes. Warning there are no instructions and several parts that have no obvious use.

Great little jig, works flawlessly, just know when you buy this... it is universal and drilling will be required to mount your small rotor as there are no holes for mounting at all. But, if your buying a rotor jig and do the type of work that requires a rotor... I am sure setting up plate and drilling mounting hold is easy work. "This is not for the novice" as mounting needs to be perfect so there is no offset vibrations as that can cause serious injuries!

Cheap Chinese junk! The base is nice but that's all I can say is decent! Only had 4 screw holes which none lined up with my router base. I had to re-drill all the holes myself. Had instruction but most was in Chinese, I don' read Chinese, it did have small section in English but very vague, Useless! Came with 4 screws to attach jig to your router but screws were way to short, I had to go buy right size screws. In the end the only piece I couldn't do better myself is the metal slide for the base plate so the jig can rotate around your work project. Save your money, make your own out of Baltic birch plywood! Going through all this work to make this work, I should have just made it myself