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post #1 of 9 (permalink) Old 03-27-2009, 11:24 AM Thread Starter
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Default Circle Template?

The attached photo is from a template bobj3 made.

Im curious why the 3/4 guide is used and not a smaller one. Perhaps there is a reason and that is the purpose of my question.

If you were to cut a circle, I would think that you would like to use a small bit like 1/4 or 3/8 with the corresponding size guide.

Thank you
Nicolas
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post #2 of 9 (permalink) Old 03-27-2009, 11:39 AM
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hi Kolias,

i made one, the 3/4 hole for the guide is so you can use a 3/8 or 1/2 inch straight cutting bit. it makes the router stable and is just for holding the router in place. but Bobj can help you more. it works great, you will be glad you built it.

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post #3 of 9 (permalink) Old 03-27-2009, 12:08 PM
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Hello Nicolas
I can only make a guess. The 3/4 in. bit can be used to shave the excess off. Due to the larger circumference, it will leave a much smoother cut than a 1/4 in. bit. If you were cutting a thin material, you could cut it with the smaller bit. Bobj3 will have to affirm what i have said. Yes, I have been wrong before

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post #4 of 9 (permalink) Old 03-27-2009, 12:24 PM
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here is another, i did not get to see the whole thing, Hope this helps, Free

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post #5 of 9 (permalink) Old 03-27-2009, 12:53 PM
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HI Nicolas

The bigger the hole the better,, if you have your router setup to take on the 1 1/2" it's the best way to go if not the 3/4" or the 1" will do just fine,,,in that way you can use many bits,, like a plunge router over for just one of them..to do both jobs at one time so to speak..

But you want the hole as big as you can get it so the chips can get out of the hole easy>>> the size of bit can be just about anything you want to use..with just a little bit of setup time you are set to just drop it in and make the cut...you can also put a nice ring or two on the outside edge of the circle...

The guide is the key on this jig..

By the way once you crank the speed up you can use a 1/4" but I don't recommend it ,,now for thin stock you will not have that error,the slot likes to fill up with chips and the bigger bit will have less jammed in the slot,,to recut over and over, not to say anything about the heat, heat kills router bits...


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Quote:
Originally Posted by kolias View Post
The attached photo is from a template bobj3 made.

Im curious why the 3/4 guide is used and not a smaller one. Perhaps there is a reason and that is the purpose of my question.

If you were to cut a circle, I would think that you would like to use a small bit like 1/4 or 3/8 with the corresponding size guide.

Thank you
Nicolas



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post #6 of 9 (permalink) Old 03-27-2009, 01:54 PM Thread Starter
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Excellent info bobj3 and Im glad I asked

I thought it would have been a stupid question but somehow I knew there was a reason.

Thanks again for sharing your experience
Nicolas
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post #7 of 9 (permalink) Old 03-27-2009, 03:13 PM
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Quote:
Originally Posted by dutchman 46 View Post
Hello Nicolas
I can only make a guess. The 3/4 in. bit can be used to shave the excess off.
The guide bushing is 3/4", not the bit.

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post #8 of 9 (permalink) Old 03-28-2009, 01:14 AM
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Nicolas, an important reason to use a large template guide whenever possible is that you are able to SEE the cutter, in addition, the sawdust (cutter dust!) does not tend to compress and increase the cutter temperature this is of course in addition to the fact that a variety of cutters can be used to put a fancy edge to the circle. Given time, I'm sure that I could remember even more reasons!

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post #9 of 9 (permalink) Old 03-28-2009, 07:23 AM Thread Starter
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Another few good reasons

Thanks Harry

Nicolas
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