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Thread: DC for the radial arm saw / miter saw

  1. #1
    Don Taylor is offline Former Member (by the member's request)
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    DC for the radial arm saw / miter saw

    I have the dumb question of the day.

    I have this Cyclone:

    http://www.pennstateind.com/store/temp1550s.html

    I want to build a box the length of my table and around 2' to 3' high along the back, open to the sawdust coming from the saws.

    If I were to take a 4" piece of PVC, capped at one end and cut an opening two to three inches wide the length of the pipe, mount it below a somewhat larger opening in the slanted box floor and hook my DC to the other end, I can't see why it shouldn't have enough pull to bring that saw dust on down and take it away? 5HP should really suck?

    It sounds much to easy. Tell me why it won't work.

    DT

  2. #2
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    I don't really know but here is what I think. If you were sucking throught an 8" pipe, end for end, you would have an intake of 50.24 square inches and that DC should handle it well. However if you cut a 3" wide slot in a pipe that is 8' long you would have an intake of 288.00 square inches which is a huge difference. If I am understanding what you are saying I would say that it would not work well if at all if you are going to cut the slot very long.

    One good thing about it is that it would not cost much to prove me wrong.

  3. #3
    Back in the day.... We built boxes to catch the spray from RAS and was able to capture a good amount. DC attached to the bottom of a square funnel that wrapped from each side of the 45 degree cuts. Mostly air born chips went down the DC tun but it couldn't lift any chips. Here at home I have an old Delta and it came with a plastic containment area (similar to the ones the hang behind the horses pulling city carriages) that seems to catch most all the spew, althogh it is not connected top the DC, it does prevent the matter from scattereing all about and keeps it close for easy cleanup. It is as wide as the base and 12" tall, sits behind the saw and gets constant pelting with chips and such, collects in the bottom and is there where I know I can find it.

  4. #4
    Don Taylor is offline Former Member (by the member's request)
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    Quote Originally Posted by Allen Bookout View Post
    I don't really know but here is what I think. If you were sucking throught an 8" pipe, end for end, you would have an intake of 50.24 square inches and that DC should handle it well. However if you cut a 3" wide slot in a pipe that is 8' long you would have an intake of 288.00 square inches which is a huge difference. If I am understanding what you are saying I would say that it would not work well if at all if you are going to cut the slot very long.

    One good thing about it is that it would not cost much to prove me wrong.
    True Allen and if it didn't work I could use the PVC for a dowel rod holder. Waste not want not.

    The slot would be three to four feet long. I'm thinking it simply wouldn't work.

    Thank you!

    DT

  5. #5
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    Well a three foot long slot would be 108 sq inch intake. Getting closer. It might work. I do not know if the suction would be consistant or stronger nearer the suction source. I think that we need an engineer specialist or------just give it a try.

  6. #6
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    I have always thought that a funnel made to fit underneath the CMS & big enough for sides to come out behind the saw high enough so become a splatter shield so the chips falling below the saw & spewing out behind would all slide to the bottom where the DC would hook up.
    "Forget the flat stuff slap something on the spinny thing and lets go, we're burning daylight" Bart Leetch
    "If it ain't round you may be a knuckle dragger""Turners drag their nuckles too, they just do it at a higher RPM"Bart

  7. #7
    Don Taylor is offline Former Member (by the member's request)
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    Quote Originally Posted by Bart Leetch View Post
    I have always thought that a funnel made to fit underneath the CMS & big enough for sides to come out behind the saw high enough so become a splatter shield so the chips falling below the saw & spewing out behind would all slide to the bottom where the DC would hook up.
    Something like that free plan for the down draft sanding table online Bart?

    DT

  8. #8
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    This is what I did and it works really good








    JEFF
    If it don't fit get a bigger hammer

  9. #9
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    How about a series of 'covers' approximately 24" long - you'd simply remove the cover where you're working. This would give you an area of 72 sq in. Might work.
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  10. #10
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    I like what Bart is saying.

    I have always though I would just build a big box with tapered sides behind the blade. Bottom flat and the other sides would taper toward the back and just put the intake hose at the bottom. And I don't think you need 3' foot wide. Maybe 2' wide, probably less. Your just trying to catch the dust that comes off the blade. Most, I assume, is thrown by the blade so thats where I would put my intake.

    But if you built a box with the duct coming in to bottom of the box, that might work better. Maybe make a pit for it to fall down into.

    Either way I think your still going to have some dust flying
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