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post #1 of 7 (permalink) Old 01-20-2014, 01:51 PM Thread Starter
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Default Air flow through routers

Do all routers flow air through from top to bottom? I can see where good dust collection could really extend the service life of a router if mounted in a table inverted. Do any vent air through the sides instead of the bottom?

Surely none vent from bottom to top. It would seem to be a great way to fill the motor with dust.
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post #2 of 7 (permalink) Old 01-20-2014, 02:46 PM
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As far as I know all router fans vent air from top down past the bit. This makes sense in 2 ways. First, it helps keep dust and chips out of the motor. Second is that there is heat produced at the cut so pulling hot air from there doesn't make sense.

I have my dust collection behind the bit on top of the table and I get 95% or better for most operations. Many of the manufactured systems also collect from that spot.

Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.
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post #3 of 7 (permalink) Old 01-20-2014, 08:41 PM Thread Starter
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I was watching a review of a popular router and the reviewer was going on how the air flow was going from top to bottom like this was something new. Hence the question.

I have a cheap router with a plastic cooling fan. While rolling some edges some of the fins broke out and fell down by the bit. Wonder if any manufacturer uses a metal fan?
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post #4 of 7 (permalink) Old 01-20-2014, 10:47 PM
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I don't know. The plastic ones should be fine if they are the right plastic.If you lost very many fins you should try and replace it.

Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.
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post #5 of 7 (permalink) Old 01-21-2014, 06:25 AM
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The Router is designed to work as it does, if it get too much dust internally then try blowing it out, I would as I would not leave the dust in there. N

Last edited by neville9999; 01-21-2014 at 06:26 AM. Reason: same old reason, can't type and can't spell
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post #6 of 7 (permalink) Old 01-21-2014, 05:21 PM
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Quote:
Originally Posted by Blooch58 View Post
Do all routers flow air through from top to bottom? I can see where good dust collection could really extend the service life of a router if mounted in a table inverted. Do any vent air through the sides instead of the bottom?

Surely none vent from bottom to top. It would seem to be a great way to fill the motor with dust.
I don't know which way the air flows in mine, several older Craftsmans. They are only used in my router table. What I do know is that I have opened a couple up, and there was not a speck of dust in either. And I know that a lot of dust is generated, and goes thru the hole for the bit - and then is blown mostly in my lap (I sit while using them).

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post #7 of 7 (permalink) Old 01-21-2014, 10:39 PM Thread Starter
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So it is not a big problem, the air flow through the router motor, that is. Guess it was advertising that caught my eye.
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