"O" Rings On Router Bits & Reducers - Page 2 - Router Forums
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post #11 of 17 (permalink) Old 05-21-2018, 04:20 PM Thread Starter
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Some time ago I posted the results of an investigation I carried out among many router manufacturers concerning the correct depth to insert router bits into the chuck. The result showed without any doubt that inserting a bit more than 1" into the chuck served no purpose at all. I too thought of the "O" ring idea and made this simple jig which avoids the ring from twisting as it's placed 1" from the end of the bit. This distance is not critical, just a guide.
Great idea Harry this shows good old Australian ingenuity. Your jig will save me fiddling with them to get them straight and untwisted.

I agree with the depth of the bit as I figured it this way, the router bit shank only needs to go a little further than the length of the collet, anything more than that is out in the cold.
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post #12 of 17 (permalink) Old 05-21-2018, 11:03 PM
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You're spot on Phillip, every collet that I measured, and I measured a great many, were 1"so as you have said, going much further than that produces no benefit.
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post #13 of 17 (permalink) Old 05-22-2018, 01:16 PM
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I found that idea (0-ring) here, years ago, and have been using one ever since!
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post #14 of 17 (permalink) Old 05-22-2018, 01:48 PM
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I found that idea (0-ring) here, years ago, and have been using one ever since!
Yeah, this place is a real treasure trove of information, hints, techniques, methods and friendly to boot!

The more I do, the less I accomplish.
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post #15 of 17 (permalink) Old 05-22-2018, 05:53 PM
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@harrysin That little box joint bit is a twin to one I have. How do YOU set it to cut a wider piece? Or is it limited in the height you can cut? That would limit it to cigar boxes.
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post #16 of 17 (permalink) Old 05-22-2018, 09:34 PM
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anyone else do this?
I have been using this trick a while. It is an easy way to make sure the bit is in far enough, but not too far. Especially handy when visibility is an issue
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post #17 of 17 (permalink) Old 05-23-2018, 09:25 AM
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@harrysin That little box joint bit is a twin to one I have. How do YOU set it to cut a wider piece? Or is it limited in the height you can cut? That would limit it to cigar boxes.
I suppose that with careful adjustment it would be possible to raise the bit to produce joints on wider stock but I have only used it for shallow boxes.
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