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post #1 of 6 (permalink) Old 03-18-2014, 03:28 PM Thread Starter
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Default lock miter joint

Hi. I have been trying to set up a freud lock miter bit using a infinity miter jig. I have had nothing but problems, and i think that it is due to the fact that bit is slanted.
Has anybody else had this problem?????
Thanks for the help.
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post #2 of 6 (permalink) Old 03-18-2014, 04:19 PM
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The attached file is from CMT router bits on how to set up the bit.

Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.

Last edited by Cherryville Chuck; 01-22-2016 at 01:39 PM.
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post #3 of 6 (permalink) Old 03-19-2014, 04:13 AM
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Are you using the new Infinity Mitre Lock Jig, or something else?

For those who haven't seen this nifty and inexpensive setup jig: 2-Pc. Lock Miter Master Jig Set - For 3/8 - 1-1/8 Stock-Carbide Router Bits | Router Bit Sets | Shaper Cutters | Saw Blades | Planer Knives | Jointer Knives | Infinity Cutting Tools

I bought one last month, just haven't had the project to use it on yet.
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post #4 of 6 (permalink) Old 03-19-2014, 06:30 AM
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The lock miter master 2 pc set is the best way to set up for these cuts. All you need to do is attach the lock miter master to your bit. It just clips onto the bit with the rare earth magnets. Then determine the exact center of your stock, mark it and move the stock over near the lock miter master and raise or lower the bit until the line on the lock miter master lines up with the center thickness mark on your stock. You then move your fence until it lines up with the vertical mark on the lock miter master. One test cut to be certain that the setup is correct and you are ready to cut your joint. It's that easy. The biggest error you will probably make is when you determine the exact center of the thickness of your stock. I do this with calipers, and I now mark from both sides. If my setting isn't right I have 2 marks instead of one and the real center is half way between them. Then it's usually very easy to see and visually mark the center. The lock miter masters work great on 45 deg bits, even different brands of bits, but I haven't yet tried to see if they will work on the 22.5 degree bits. I doubt that they will.


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post #5 of 6 (permalink) Old 03-19-2014, 09:44 AM
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After you've set it up and are ready to run two pieces of scrap, take them to the saw of your choice and cut a 45 on both pieces, leaving a flat on the ends to ride against the fence or table.
You'll find that the cut will be easier without all that wood to hog off.
If everything tests out good, then 45 the work pieces, too.

Gene Howe
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post #6 of 6 (permalink) Old 03-20-2014, 07:44 AM
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I believe Sommerfeld tools has an easy set jig for Freud bits as well in their catalog.
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