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post #1 of 25 (permalink) Old 12-09-2011, 04:26 PM Thread Starter
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Default Newbie Template Question

I am in the very early learning stages as it relates to guide bushings and templates and I am trying to get my head around this.

Is it accurate to say that when one is making a template to be used in conjunction with a guide bushing (not a bearing bit) that the offset needs to be factored into the dimension of the template being made?

For example if my goal is to produce a 6 inch by 6 inch square (with rounded corners) and my bit to bushing offset is 1/8 of an inch is it correct to say that my template will need to be 1/4 of an inch "smaller" if I am routing around the outside perimeter of my template OR 1/4 of an inch "larger" if i am routing around the inside perimeter of the template?

Sorry for the basic questions. My brain is just not cooperating with this.

Thanks
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post #2 of 25 (permalink) Old 12-09-2011, 05:01 PM
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You are correct. But as you are testing the waters you might as well test your templet on scrap first. There are still surprises on top of the math. Collar centricity, cutter diameter, quality of templet, unexpected changes of radii on inside cuts and 10 more anomalies!
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post #3 of 25 (permalink) Old 12-09-2011, 05:24 PM
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Gee whiz Pat, you are going to scare Tom from trying. Tom, it helps to have good reference material to guide you through a new process. There is a wealth of information on the forums but you might like to get a book for handy reference in the shop. Here is a link to a good one by Pat: Amazon.com: The Router Book: A Complete Guide to the Machine and its Accessories (9781561584239): Pat Warner: Books

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post #4 of 25 (permalink) Old 12-09-2011, 06:23 PM
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HI Tom


You are on the right track..

Lets take a 1/2" OD guide and a 1/4" router bit.the bit will have two paths so to speak , inside one and a outside one, that's to say the bit will cut 1/8" from the guide,and 3/8" from the guide..at the same time..that's where the female or male templates come into play..once you get that down the guides and templates will just drop into place..


===========
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Originally Posted by Tom5151 View Post
I am in the very early learning stages as it relates to guide bushings and templates and I am trying to get my head around this.

Is it accurate to say that when one is making a template to be used in conjunction with a guide bushing (not a bearing bit) that the offset needs to be factored into the dimension of the template being made?

For example if my goal is to produce a 6 inch by 6 inch square (with rounded corners) and my bit to bushing offset is 1/8 of an inch is it correct to say that my template will need to be 1/4 of an inch "smaller" if I am routing around the outside perimeter of my template OR 1/4 of an inch "larger" if i am routing around the inside perimeter of the template?

Sorry for the basic questions. My brain is just not cooperating with this.

Thanks



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Last edited by bobj3; 12-09-2011 at 06:50 PM.
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post #5 of 25 (permalink) Old 12-09-2011, 06:47 PM Thread Starter
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Thank you gentlemen. I have a lot to learn. I am going to go get my first guide bushings this weekend and go out in the lab (garage...lol.) and experiment....

Thank you all
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post #6 of 25 (permalink) Old 12-09-2011, 08:57 PM
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Tom, Woodcraft sells a set with all the collars just under 1/4" for about $38. There is an advantage to this since you can use 1/4" templates for all your jobs. Other places sell sets with some short and some long collars which requires 1/2" thickness for your templates; these sets usually cost less. To my way of thinking using just one thickness for your templates is easier but both ways do work. Note that the larger Oak Park/Lee Valley style guide bushings are all just under 1/4" collars.

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post #7 of 25 (permalink) Old 12-09-2011, 09:15 PM
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Hi

Just one more place to get the SHort stem (1/4" tall ) type,for 24.oo bucks with free shipping if you play it right.

Amazon.com: Shop Fox D3117 Brass Guide Bushing Set: Home Improvement

15.oo dollar set ▼
http://www.harborfreight.com/9-piece...set-98361.html

The bigger OD set ▼ 28 dollars and 50 and the one I suggest getting and using.
http://www.leevalley.com/en/wood/pag...00,51208,41778
===

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Last edited by bobj3; 12-09-2011 at 11:46 PM.
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post #8 of 25 (permalink) Old 12-09-2011, 10:08 PM
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Just another source for short barrel guides:
Router Brass Template Guide Set - Router Accessories

Bj's link will get ya free shipping for another $1.25 though

Just a couple of tips. Try to get a set with a 1" OD bushing in it. The sets Mike, Bj and I linked to all have that. The other thing to be aware of is that there are at least two different thread pitches, probably more, so if adding to your collection later either try to use the same vendor or order a lock ring if the individual bushing doesn't include one. Just using the same vendor doesn't guarantee anything but the odds are a bit better.

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Last edited by jschaben; 12-09-2011 at 10:17 PM.
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post #9 of 25 (permalink) Old 12-09-2011, 10:13 PM
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Hi John

Talking about Eagle, have you got the NEW cat.it's a copy of the MLCS items.
I had to read the cover one more time to see if it was a miss print of the MLCS cat.

===

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Originally Posted by jschaben View Post
Just another source for short barrel guides:
Router Brass Template Guide Set - Router Accessories

Bj's link will get ya free shipping for another $1.25 though



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post #10 of 25 (permalink) Old 12-09-2011, 10:25 PM
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Quote:
Originally Posted by bobj3 View Post
Hi John

Talking about Eagle, have you got the NEW cat.it's a copy of the MLCS items.
I had to read the cover one more time to see if it was a miss print of the MLCS cat.

===
Hi Bob - No, I haven't read through their catalog........yet But I did hear where MLCS bought out Eagle America around August/Sept so I'm not surprised. Might be pretty good marriage.

John Schaben

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