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Enclosed dust box on router table

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Forum topic by JL7 posted 1321 days ago 3154 views 0 times favorited 7 replies Add to Favorites Watch
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JL7

6994 posts in 1563 days


1321 days ago

I just built a new router table and yesterday I installed a brand new PC 7518 motor. The motor is enclosed in a dust box, you can see photos here.

I was running the motor for 10 minutes or so, working on a project and noticed the table insert was getting pretty warm. Being new to 7518, I assume they do put off some heat, but should I be concerned that I’m not getting enough air to the beast?

Appreciate your comments.

Jeff

-- Jeff - I have not failed. I've just found 10,002 ways that won't work.


7 replies so far

View Howie's profile

Howie

2656 posts in 1521 days


#1 posted 1321 days ago

JL, I have a LS/25 Incra with the super fence on my router table and a Rousseau lift and a Makita 1100. I built an enclosed box on mine just like you did except I left about 1/4” gap around the top between the table and the box. Haven’t noticed any heat build up. My DC runs thru the fence and also out the bottom of the box. Seems to work okay(not great but okay, still get some “blowby”)
That is one fine looking set up you have. Great job.

-- Life is good.

View Greedo's profile

Greedo

465 posts in 1558 days


#2 posted 1320 days ago

are you also extracting the air out of the dust box with a vacuum or dust extractor?
routers are cooled by the airflow generated by the internal fan, if that air has nowhere to go then the router will overheat. if i need to let it operate for over a minute then i will leave the RT door open, shop vac or not. otherwise it’s like an oven in there.

View Mark Shymanski's profile

Mark Shymanski

4983 posts in 2310 days


#3 posted 1320 days ago

From the photos that great looking table looks pretty airtight, you may be restricting the air flow too much as Howie and Greedo said. It probably isn’t a fire hazard but it sure will be hard on bearings and windings.

-- "Checking for square? What madness is this! The cabinet is square because I will it to be so!" Jeremy Greiner LJ Topic#20953 2011 Feb 2

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JL7

6994 posts in 1563 days


#4 posted 1320 days ago

Thanks for the comments. Yes I am pulling dust out with a collector. The box is all sealed except for around the door which has gaps. For now I will leave the door open, but locg term, maybe design an adjustable air intake?

Howie – do you have pictures of your Incra setup? I would be interested in seeing!

Jeff

-- Jeff - I have not failed. I've just found 10,002 ways that won't work.

View Bill White's profile

Bill White

3342 posts in 2558 days


#5 posted 1319 days ago

Look at the Rockler router table dust box for an idea as to how you might vent the box. Gotta have some make up air in the box for the vac system to work properly.
Bill

-- bill@magraphics.us

View GaryL's profile

GaryL

1074 posts in 1428 days


#6 posted 1319 days ago

You probably need to improve the airflow into the box. I had the same problem when I built my router table cabinet. The upper portion of the cabinet is the dust box and I adjusted the doors to close tightly hoping to get air flow through the router base itself. This proved too restrictive and the router did get warmer than precabinet. I now crack a door open and it helped tremendously. I need to drill some vent holes to allow more air into the box.

-- Gary; Marysville, MI...Involve your children in your projects as much as possible, the return is priceless.

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JL7

6994 posts in 1563 days


#7 posted 1308 days ago

Thanks for all the replies – I appreciate it! I did make an improvement to the rig – see post here.

-- Jeff - I have not failed. I've just found 10,002 ways that won't work.

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