For those that have router mounted in cabinet - Woodworking Talk - Woodworkers Forum
 
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post #1 of 9 Old 07-30-2015, 10:07 AM Thread Starter
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For those that have router mounted in cabinet

How do you keep the router cool?

I have a bench dog cabinet with a dewalt router setup in it. This past week I added a dust port to the back of it and sealed off all the openings except for where the router comes out of the table. Dust collection works terrific after doing this now, but I think the router started to overheat. Last night after running for 15 min. or so it starting to make a little noise and was sounding different, also seemed like the speed would dip/flicker (imagine lights flickering) where this has never happened before and didn't occur until it had run for 15 min.

When I turned it off, it came to a stop much more quickly than it usually does. After it was off it was pretty warm to the touch, the collet and shaft were pretty hot.

I have never noticed this before doing the sealing of the openings, nor did I ever feel how hot the router is after running. Nothing ever happened that made me feel like I needed too.

I was just doing tongue and grove cutting, nothing to heavy. the dust collection is a shop vac.

Is it as simple as opening the door between cuts/boards while it is running? I will be running it again tonight, with a smaller bit so maybe it was just me being paranoid.

Cabinet I have: http://www.amazon.com/gp/product/B00...Z2DKK1GYPWAQYT
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post #2 of 9 Old 07-30-2015, 01:09 PM
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Interesting question. I plan on doing this as well.
Here's my plan (and assumption);
I'd vent the enclosure so that when the DC system is running, it would pull fresh cool air into the enclosure, so the router would actually have better than normal air flow as the DC is drawing air across it, as opposed to the router relying on it's own "fan system".

Now....that being said, I have wondered about direction of air flow, and if the DC will actually be fighting the routers normal direction of airflow. I haven't got that far in my project, so I (like you) have more questions than answers.
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post #3 of 9 Old 07-30-2015, 01:26 PM
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Is that a hole in the door, if it is that should be enough air to cool the router with the dust collector pulling air through the cabinet. If it isn't pulling air through the cabinet, you can install a small fan in the cabinet to cool the router.

Just curious, what horse power/amps is your router?

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Last edited by BigJim; 07-30-2015 at 01:29 PM.
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post #4 of 9 Old 07-30-2015, 01:35 PM
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I'm using this gentleman's idea for motor cooling in the under table dust box I am building (starts at about 7 minutes)..

https://www.youtube.com/watch?v=lIzyEHZz3z0

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post #5 of 9 Old 07-30-2015, 01:50 PM
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a vent on the front of the cabinet, so the air is pulled past the router. keeps the router cleaner also.
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post #6 of 9 Old 07-30-2015, 02:12 PM
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The dust collector ~should~ pull enough airflow through the split fence opening and space between the bit and base plate to provide enough ventilation. I've never had a problem in my bench dog cabinet, but I use a 1 1/2 hp dust collector.
Table:

It has a sheet metal enclosure like this that seals up pretty tight:

Mine does not have the little vent on the side, but a hose coming out of the back going to the fence. Router is a 3hp Porter Cable. Like I said, never had a problem with overheating, though, like any machine, anything with moving parts gets hot to the touch after running it for a bit.
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post #7 of 9 Old 07-30-2015, 03:54 PM Thread Starter
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Quote:
Originally Posted by BigJim View Post
Is that a hole in the door, if it is that should be enough air to cool the router with the dust collector pulling air through the cabinet. If it isn't pulling air through the cabinet, you can install a small fan in the cabinet to cool the router.

Just curious, what horse power/amps is your router?
I have the DW618 - 2.25hp router mounted.
The hole in the door is plugged. I pretty much sealed all gaps except the hole in the table top. The dust collection comes through a hole I drilled in the cabinet. I am not using the fence that came with the bench dog thus there is no dust port on the back of the fence. My setup is pulling fresh air into the cabinet through the top router bit hole.

I will run it again tonight, maybe with the door open. I am starting to wonder if I was only noticing it because I did the sealing and changes and thus worrying over nothing.
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post #8 of 9 Old 07-30-2015, 04:17 PM
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if the collet was "that" hot, and the motor came to a stop faster than normal, it does appear you have a problem.
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post #9 of 9 Old 07-31-2015, 06:14 AM
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"How do you keep it cool".....


The same way we keep a cpl other pcs cool,notably a 453Z Grizz planer.....we use a QD air hose fitting with a pce of 1/4" copper refridge line soldered in it.This gets bolted to the outer case.....refrige line easily bends to exact shape/angle to direct air "at" offending part.

Staying with RT.....it helps with general airflow from a dust management standpoint.You have to play with the "balance" of air,which is really why this works so well even beside the VERY noticeable cooling effect.But get the balance right(adj air pressure),along with air/tube angle, and it'll really clean up the DC.

There are these cheapy brass air regulators that are quite slim.Might even be HF brand?Totally useless for anything important(air wise),but they work fine for regulating stuff like RT's.It's just a pce of hex barstock with a thumbwheel calibrated in some little hieroglyphics?And they leak a bit....don't care.Set it,forget it,disconnect shop air hose when not in use.

Those who say it cannot be done shouldn't interrupt the people doing it.
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