What kind of bit should I use - Router Forums
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post #1 of 58 (permalink) Old 01-13-2016, 02:17 PM Thread Starter
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Default What kind of bit should I use

Hi, I am brand new to using a router and would like some help selecting a bit. In the picture is a wooden airplane wing. If you look at the close-up, there is 1/4" pine filler strip that I need to route off of the spar. I also included a picture of a jig someone told me I should make to place over the spar. I guess I am only asking abojt the bit and I will post the jig question in the other forum unless you can answer here.

Thanks in advance.
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post #2 of 58 (permalink) Old 01-13-2016, 02:34 PM
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Welcome to the forum.
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post #3 of 58 (permalink) Old 01-13-2016, 02:55 PM
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Welcome to Router Forums. I'm sure others will be along soon who may be able to provide a better answer than me.


I'm not real sure about exactly what you want to do and I don't know much airplane terminology, but your jig looks like one that would be used with a router and guide bushing. If you are trimming away a pine strip, most likely you would want to use an up spiral straight bit. The size of the bushing and router bit would be determined by what you are doing, and this part isn't at all clear to me. Maybe closer pictures and pointer arrows would help.

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post #4 of 58 (permalink) Old 01-13-2016, 03:06 PM
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Quote:
Originally Posted by CEOoftheSOFA View Post

1... Hi, I am brand new to using a router and would like some help
2... selecting a bit.
In the picture is a wooden airplane wing. If you look at the close-up,
3... there is 1/4" pine filler strip that I need to route off of the spar.
4... I also included a picture of a jig someone told me I should make to place over the spar.
5... I guess I am only asking about the bit and I will post the jig question in the other forum unless you can answer here.

Thanks in advance.
1... Hi and welcome nameless person... Do you need any help w/ knowing your router..
2... 1st suggestion is a planer bit, next is a mortising bit w/ top bearing..
3... how wide is the filler and how long of cut do you need/wish to make...
I take it you want to go only a ¼'' deep...
4... w/ the top of the spar having a radius a jig my not be the best approach unless you are intending to match the jig to the curvature of the spar..
5... both Q's are fine...

do you have metal fasteners in the filler piece??
what is the white stuff I see..
would cutting from zero inches to ¼'' and back to zero inches work over the length of a cut???
have you considered an electric plane???

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post #5 of 58 (permalink) Old 01-13-2016, 03:11 PM
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Charley is right ,what ever the width of the jig determines the max diameter of the router bushing you would install in the base of the router. The bit would fit inside the bushing and would be a straight bit with end cutting capabilities. Essentially you will be planing down the spacers in the spar so set the depth to match the top of the spar. Be sure that the runners on the jig will clear any bolts etc on the sides of the spar so you can slide it along the top. Also make sure the router bushing doesn't protrude below the bottom of the jig. Like Charley pointed out use an up spiral if possible.

Herb

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post #6 of 58 (permalink) Old 01-13-2016, 03:25 PM
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Quote:
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Charley is right ,what ever the width of the jig determines the max diameter of the router bushing you would install in the base of the router. The bit would fit inside the bushing and would be a straight bit with end cutting capabilities. Essentially you will be planing down the spacers in the spar so set the depth to match the top of the spar. Be sure that the runners on the jig will clear any bolts etc on the sides of the spar so you can slide it along the top. Also make sure the router bushing doesn't protrude below the bottom of the jig. Like Charley pointed out use an up spiral if possible.

Herb

Stick beat me to it.
doesn't anybody believe in bearing guided bits any more???
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post #7 of 58 (permalink) Old 01-13-2016, 04:23 PM
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Quote:
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doesn't anybody believe in bearing guided bits any more???
I do. They are usually an easy solution and allow you make an exact size template.
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post #8 of 58 (permalink) Old 01-13-2016, 04:30 PM
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Quote:
Originally Posted by Stick486 View Post
doesn't anybody believe in bearing guided bits any more???
I might have suggested a bearing bit, but the jig looks more like it is designed for a bushing to me. With so little detail of what the OP wants it's difficult to know what would be the right choice. I think we'll have to wait for him to come back with more information and detail of his needs.

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post #9 of 58 (permalink) Old 01-13-2016, 04:42 PM
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If what you want to do is trim the piece on top of the spar and in between the ribs flush with the top of the spar then you can use a straight bit and the jig in this thread. http://www.routerforums.com/jigs-fix...ing-flush.html
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post #10 of 58 (permalink) Old 01-13-2016, 04:50 PM Thread Starter
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Hi everyone. Thanks for the welcome and all the responses. A lot of the terminology is new to me. When I get home from work I will post pictures with arrows pointing out exactly what I want to do in more details, I forget that this is not a Aviation message board so I need to be more explanatory.
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