Router bit with fishtail tip

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kak
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Router bit with fishtail tip

Post by kak »

I have one of them, 3mm and I like it.
I only get one hit when I google "fishtail router bit".
The cutting edges are crossing like an X at the tip, so it's cutting with the shoulders.

Do you know another name for that bit?
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Adrian
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Re: Router bit with fishtail tip

Post by Adrian »

This question came up the other day. See my reply here - http://forum.vectric.com/viewtopic.php? ... 9&p=204852

ger21
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Re: Router bit with fishtail tip

Post by ger21 »

2 flute upcut spiral router bit.
Gerry - http://www.thecncwoodworker.com

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Leo
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Re: Router bit with fishtail tip

Post by Leo »

Actually I did not know such a geometry was available. It's new to me. I don't know how long this has existed.

I googled Router Bit with fishtail and a lot popped up.

Interesting, I will try this over the winter.
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Rcnewcomb
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Re: Router bit with fishtail tip

Post by Rcnewcomb »

Be aware that these are fine for profile cuts but for pocketing they can tend to leave swirl marks on the bottom of the pocket.
- Randall Newcomb
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Leo
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Re: Router bit with fishtail tip

Post by Leo »

Ohhh, I am very much aware that this is NOT a good geometry for a nice smooth flat bottom.

For hole making where the hole size is controlled via circular interpolation is where I see something this.

Nice smooth flat bottom pocketing is another whole process discussion.
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scottp55
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Re: Router bit with fishtail tip

Post by scottp55 »

Very good for CLEAN sidewall cuts, and leaves a little "tooth" on pocket bottoms for gluing dense oily woods. Seem to have a cleaner top edge with less splintering, and very clean bottom on drill throughs/cutouts. I only have used the .117" though from here;
http://www.precisebits.com/products/car ... t-soft.asp
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