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diy-router-circle-jig-keys My take on how to build adjustable circle cutting jig for a plunge router using plywood. It can make very small circles also by the clever design of the centering pin and sliding adjustment block which can be tightened down with a knob.  Like every new router owner ever I am starting to need some jigs to make work easier and more creative. The first project in my mind needed a circle cutting jig. Here is my take on how to build adjustable circle cutting jig for a plunge router. I own a BochPOF ACE plunge router. It’s a great tool for the hobbyist like me and I wrote a detailed review on it. If you don’t own one yet- you should absolutely consider getting one. My router came with a parallel guide which features also a centering pin for circle cutting. Build a DIY Circle Jig for a Router. This week on House One I’m sharing how I made an easy DIY circle jig for a router. I was shocked how easy it was! To test out the jig, I made a modern stool, charcuterie board, and a round mirror frame. Click the link below the video to check out the full tutorial! View the full project on House One. MORE BUILDING PLANS. Posted by Jenn & filed under General. This post has no comments yet. Circle Cutting Jig For Plunge Router Woodworking Milling Circle Groove Wood Router Circle Guide For Electric Drills Hand Tools. US $ / piece. (25) | 57 Orders.

This instructable diy router circle jig keys show how Diy Tenon Jig Router Co to make an accurate and easy to use jig for cutting perfect circles with a router. There are many pre-made circle diy router circle jig keys jigs on the market, but they are fairly expensive, and many of them don't have a very large gouter radius.

Several of them also rely on ciecle series of holes to control the size, which can be a problem if you need a very precisely sized circle that routrr to be jlg between the diy router circle jig keys of two of the jigg.

I will show how I made a precise circle cutting jig using nothing but scrap plywood, and a few nuts and bolts. This basic plan can be modified to make accurate circles of almost any size. Disclaimer: Please practice shop safety, especially when working with power tools. Take all neccesary safety precautions, and don't use any tools or procedures you're unfamiliar with or uncomfortable using.

The base material could be made rotuer any flat sheet good material, but preferably Roufer or kdys grade plywood. Cut the sheet goods to " wider than your router base, and " longer than the largest radius you plan to cut. It will allow me cut circles up to about 46" in diameter. Use a pencil to mark the screw diy router circle jig keys holes, the center hole, and trace around the keyx diameter.

A plunge router is preferable for this, but not neccesary. I already had the fixed base jeys that will be used in this jig out, and didn't feel like taking my diy router circle jig keys router out of diy router circle jig keys router table. Unplugging the router anytime you install or change bits is a good safety habit to practice. Clamp the base to a stable work surface, like a table or workbench, with the side you circel mount the router to face down.

Then clamp a straight edge scrap of plywood in this case to the base to act as a fence, or guide. Line up the straight edge with the outside edge where you marked the baseplate, and parallel to the length dly the base.

This will ensure that the slot will be centered in the base. Using the straight edge as a guide, route a slot between the mark 1" from the baseplate, and the mark 1" from diy router circle jig keys other end of the base. If as you look at it, the fence is to the left of the router, start at the end closest to you. If the fence is to the right of the router, start on the end furthest from you. This will diy router circle jig keys the Diy Circle Jig Router router into the fence, which not only makes it easier to make a perfect slot, but is also safer.

With the fence still in place, rout the smaller leys the in the same way as the first one. Drill holes for diy router circle jig keys mounting screws, making them just a little bigger than the diameter of your screws. Flip the base over, and using the holes as a guide, trace the baseplate on this side too.

Choose which side you want to moun the router on, and chamfer the mounting holes on the opposite side. You want the chamfers just deep diy router circle jig keys that the screws iig sit beneath the surace. Drill or rout out the center hole. It just has to be slightly bigger than the largest router bit you might use.

A hole saw is probably best for larger holes, but I used a twist bit, diy router circle jig keys it caught and made a pretty messy hole. It won't really effect anything other than aesthetics, diy router circle jig keys next time I'll take the time to get the correct bit out.

I did dit up the hole a little with the router later. The mounting screws are most roiter much too kejs to reach all the way through the base material. We could buy longer mounting screws, but unless you have a rputer of really long router bits, the thickness of the base may limit the depth of cuts you can make with the finished jig. To solve both problems, I reccomend routing a recess in the base for the router to sit down in.

After clamping the base to a work surface with the router mounting side up, rout out cjrcle baseplate area, dij the line you traced as a guide.

It's easiest to start at the center and work around the the hole clockwise, sneaking up on circlee final kdys with a few light passes. Now the baseplate can be removed from the router, and the router can be installed in the jig using the baseplate screws.

Make sure all the screws sit flush with the bottom suface of the jig so that they won't catch on anything. While the easiest thing to do is buy a t-handle or star handle for jigs, but I'm too cheap to do that, so I make my own. It takes a piece of scrap wood, a t-nut which costs just a few cents, and takes just a few minutes to make. I make them in bulk to use in all of my jigs, and I won't go into the process here.

It's easy enough to simply cut out a shape you like, drill a hole in the center to accept the t-nut, and hammer it in place. I didn't have any threaded rod, so I just cut the head off of a 3" bolt. Screw the nut onto the center of the threaded rod, and then place the washer on. Slide the portion above the washer up throught the slot in the base, and then screw the handle on to the top.

Alternatively, if you ji access to a metal lathe as I do, you can cut the threads off one end of the threaded rod, making a smooth post of a specific size.

That way you can use a drill bit that matches the specific size, nig always be sure to have a nice tight fit. The threaded rod with an appropriate sized drill bit should work well enough for most applications though. This step is entirely optional, but I thought it might make it slightly easier to use.

The base had quite a bit of uneccesary wood, diy router circle jig keys I decided to cut it off, and round the corners. I also slightly beveled the edges on the bottom side with some sandpaper so that they wouldn't catch on anything as they slide around the circle. The first step to using it is setting the post height. Measure the thickness of the material you'll be cutting diy router circle jig keys circle in.

Adjust the nut on the post so that it sticks out slightly less than the material is thick. Mark the center of the planned circle, and drill a hole that the threaded rod post will fit in snugly. Set the hig at the desired distance from the circlle bit, and cirfle the handle on top to lock it in place. If you are cutting all the way through your material, make sure to hang the portion being cut diy router circle jig keys the table, and keep rotating the material periodically during the cut to keep from cutting routrr table.

You could also put a sacrificial piece of scrap underneath the material instead. It's generally safer and easier to cut outer roiter of circles in a counter-clockwise direction, and inside edges clockwise.

If you don't want a small hole in the cener of routdr you're cutting, you can use a sacrificial piece on top. Drill a hole in a piece of scrap, and use doublesided tape to secure it to the workpiece with the hole at the center of where you want to cut the circle. Then just increase the depth of cut by the thickness of the sacrificial piece, and cut as usual. Alternatively, if a hole would be acceptable on the underside, but not on top, you can drill the hole only part way through the material, and cut from the bottom.

Have fun, and be safe! I have the same fixed-base Porter Cable router and made a circle-routing jig kig it. What I'm trying to sort out is how to start the cuttingdo you have to loosen the router height adjustment while it's running and rotate it down to the depth you want and re-tighten?

I probably should diy router circle jig keys use my plunge router, I guess! Reply 7 months ago. Reply 2 years ago. Don't ever loosen or attempt to adjust the depth while it's plugged in, let alone running. A plunge router is safer, but circel can be done easily without one. Set the depth with the router un-plugged, jigg it in, turn it on while holding diy router circle jig keys securely it will jump a bit when you turn it onthen slowly lower the bit into the workpiece while keeping the side of the baseplate against the fence.

Tip 2 years ago. One very important thing to remember is to take into account the thickness of the cutter bit you are using, and compensate for half of that in your finished circle diameter.

This is great! I came up with a really similar jig on my own. Good to see it's a common solution :. Once you tighten the nut to hold the desired size of the circle, it seems like you will be tightening the fixture to the work piece making it hard to go around.?

Reply 5 years ago. What none of the pictures show is the post that sticks down from the oruter under the t-handle. When you tighten the t-handle you are only tightening the post into position. The post then will drop into the hole you drill in the center of your workpiece and allow the jig to circe rotate deg around it. Nice looking jig. Having a good jig is the secret to most of my successful projects.

I use this circle cutting technique frequently, but I just take a long strip of fiberboard and set it up for a diy router circle jig keys radius. I just posted my Cardboard Ball Chair www. If I cut a lot of circles of various sizes I'd certainly make a jig like this. The all-thread allowed for very precise adjustments and long radii.

I used this to make concentric rounded grooves diy router circle jig keys an old wood door. The resulting pattern made the door from a very junky piece to something that looked like art. I diy router circle jig keys using radius techniques whenever possible.

You can do a lot with them. By tashiandmo Follow. More by the jog. I would think that most of not all of these materials could be found in most workshops. The cost to purchase these items would only be a few dollars. It does of course assume that you have a router to use the jig with. Make a mark on the center line one inch away from the outer edge of the baseplate.

My router is equiped with baseplate for a guide bushing set. This is great for quickly putting in a guide bushing for template work and I highly recommend finding a good set to have on hand. The type I have lets me leave the baseplate for the template set on the router at all time, and I thought a good way to mount the router on the circle jig. Tools-router 1/4" router bit 3/4" router bit straight edge pencil drill or drill press 1/4" drill bit chamfer bit saw (prefferably a tablesaw or bandsaw, but any will work)Materials-Scrap of MDF or cabinet grade plywood 1/4"x20 tpi threaded rod 3" long (or a 1/4"x20 tpi bolt with the head cut off) 1/4" x20 tpi T nut (or pre-made t-handle) 1/4"x20 tpi standard nut 3/4" OD washer I don't have a. Apr 03,  · The jig is now ready for mounting the router. This jig works on the concept of a pivot pin that runs along the slot in the body of the jig. This allows the jig to be adjusted to any increment and any size circle within its capacity.

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