Downdraft Sanding Table - Router Forums
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 39 (permalink) Old 07-14-2009, 02:23 PM Thread Starter
Registered User
 
Join Date: Apr 2008
Country: United States
First Name: Bob
Posts: 253
 
Downdraft Sanding Table

Hi- I am going to build a downdraft sanding table which will hook up to my dust collector (1.5 hp, 1200 cfm, Jet cannister dust collector). I plan to mount it on my workbench via a couple of clamps in use and want it to be portable to store away when not in use. I'm thinking of making it roughly 18" x 24". It will probably have detachable or fold up wings to aid in dust collection. The dust collection hookup would probably be on one side or maybe the back. Right now, I'm thinking of using either spaced slats or pegbard with the holes drilled out a little for the sanding surface.

I am looking for any ideas/plans anyone has. I'd be especially interested in hearing from anyone who has built a table, used it for awhile and has an opinion as to what design features are most important. Any ideas you could offer would be most appreciated.

Thanks in advance.

rstermer
rstermer is offline  
Sponsored Links
Advertisement
 
post #2 of 39 (permalink) Old 07-15-2009, 12:10 PM
Retired Moderator
 
CanuckGal's Avatar
 
Join Date: Nov 2008
Country: Canada
First Name: Deb
Posts: 3,132
 
Send a message via MSN to CanuckGal
There is a simple plan for a portable downdraft table from Woodsmith. You might be able to modify it to your needs.
CanuckGal is offline  
post #3 of 39 (permalink) Old 07-15-2009, 01:12 PM
Retired Moderator
 
BigJimAK's Avatar
 
Join Date: Mar 2009
Country: United States
First Name: Jim
Posts: 3,503
     
rstermer,

Here's a good site on one persons experiments in sizing and designing a downdraft table.

Bill's Cyclone Dust Collection Research - Dust Collection Downdraft Table

I've mentioned Bill before regarding dust collection. I don't take him as the end-all of DC but he has far more research in one place on the topic than I've seen anywhere else. It'd be worth your time to look over the site; he provides the basis for his findings so you can reality-check them yourself.

I'm still digesting some of the ramifications of some of his findings. They seem legit.

Jim

Check out that new high-tech cordless router.. wireless and no recharging required!!
BigJimAK is offline  
post #4 of 39 (permalink) Old 07-15-2009, 04:33 PM Thread Starter
Registered User
 
Join Date: Apr 2008
Country: United States
First Name: Bob
Posts: 253
 
Quote:
Originally Posted by CanuckGal View Post
There is a simple plan for a portable downdraft table from Woodsmith. You might be able to modify it to your needs.
Thank you, CanuckGal. That one looks easy to build. I do think wings are necessary to prevent dust escaping, but they would be easy to add.
Regards,
rstermer
rstermer is offline  
post #5 of 39 (permalink) Old 07-15-2009, 04:40 PM Thread Starter
Registered User
 
Join Date: Apr 2008
Country: United States
First Name: Bob
Posts: 253
 
Quote:
Originally Posted by BigJimAK View Post
rstermer,

Here's a good site on one persons experiments in sizing and designing a downdraft table.

Bill's Cyclone Dust Collection Research - Dust Collection Downdraft Table

I've mentioned Bill before regarding dust collection. I don't take him as the end-all of DC but he has far more research in one place on the topic than I've seen anywhere else. It'd be worth your time to look over the site; he provides the basis for his findings so you can reality-check them yourself.

I'm still digesting some of the ramifications of some of his findings. They seem legit.

Jim
I've been doing a lot of reading on his website. It is scary stuff and should motivate anyone who thinks dust is something one can disregard to think otherwise. My main takeaways are that the downdraft table can't be too big or the dust will escape and that it is necessary to add baffles on the sides of the box to prevent the dust from escaping, which, if it does, really means it is going to be floating around for awhile.
rstermer
rstermer is offline  
post #6 of 39 (permalink) Old 07-18-2009, 02:57 AM
Forum Contributor
 
xplorx4's Avatar
 
Join Date: Dec 2008
Country: United States
First Name: Jerry
Posts: 10,671
 
Check out the build by TRN_Diesel in his gallery @ http://www.routerforums.com/show-n-t...g-station.html. You might get some ideas from this project.

Wisdom: Where experience and knowledge combine and become one.

"We are all one decision away from Stupid!!"

Lamentations 3:22-23

"How often we sacrifice the permanent plans of God on the altar of immediate solutions"

I have a very good memory, just short is all.
xplorx4 is offline  
post #7 of 39 (permalink) Old 07-19-2009, 07:31 AM Thread Starter
Registered User
 
Join Date: Apr 2008
Country: United States
First Name: Bob
Posts: 253
 
Quote:
Originally Posted by xplorx4 View Post
Check out the build by TRN_Diesel in his gallery @ http://www.routerforums.com/show-n-t...g-station.html. You might get some ideas from this project.
Thanks for posting that. Diesel does nice work and I learned a lot just looking at his posts.

A couple of thoughts though. Using a shop vac to collect the dust is almost certainly not effective and even a 600 cfm dust collector is probably too small. If one was going to build the table he built, probably a 1250 cfm dust collector and 6" ducting would be required for it to be effective, the size is quite large and so lots of cfm are required. That is just an estimate because I don't know the exact size, more info can be found here:

Bill's Cyclone Dust Collection Research - Dust Collection Downdraft Table

Also, the design could be improved by the addition of a slanted baffle in the dust collection chamber running from the top front of the table to the back bottom near the collection port.

Finally, my reading indicates it really appears to be necessary to add walls around the outside to help contain the dust. Once the dust gets past the edge of the table, it is not going to be collected by the downdraft table.

Thanks again for the reply, very interesting build!
rstermer
rstermer is offline  
post #8 of 39 (permalink) Old 07-19-2009, 09:25 AM
Forum Contributor
 
AxlMyk's Avatar
 
Join Date: Jun 2006
Country: United States
First Name: Mike
Posts: 3,165
   
I've been wanting to build one to sit on top of the router table. Take the router and insert out, put the box on top, turn on the DC and go to town.
The table is 24x36 so that should be big enough for most things I do.

.
Never, under any circumstances, combine a sleeping pill and a laxative on the same night.

Mike - Retired FoMoCo Tradesman
My Gallery @ http://www.routerforums.com/axlmyks-stuff/

Last edited by AxlMyk; 07-19-2009 at 09:28 AM.
AxlMyk is offline  
post #9 of 39 (permalink) Old 07-19-2009, 10:55 AM Thread Starter
Registered User
 
Join Date: Apr 2008
Country: United States
First Name: Bob
Posts: 253
 
Quote:
Originally Posted by AxlMyk View Post
I've been wanting to build one to sit on top of the router table. Take the router and insert out, put the box on top, turn on the DC and go to town.
The table is 24x36 so that should be big enough for most things I do.
That's a great idea, it appears one needs approx. 800- 1000 cfm to make that work, which is very doable.
rstermer
rstermer is offline  
post #10 of 39 (permalink) Old 07-19-2009, 10:55 PM
Retired Moderator
 
BigJimAK's Avatar
 
Join Date: Mar 2009
Country: United States
First Name: Jim
Posts: 3,503
     
I really like that idea, Mike. Brilliant!

Check out that new high-tech cordless router.. wireless and no recharging required!!
BigJimAK is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Router Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Rigid Model R2900 Router Combo and Ryobi Model A25RT02 Router table bigdave720 Table-mounted Routing 12 04-05-2012 07:27 PM
New router, need table, building dovetail cabinets santana157 General Routing 7 02-02-2009 11:34 PM
Drum sanding bits in a router table??? jer760 General Routing 10 11-27-2007 09:33 AM
Down draft sanding table Glenmore Tools and Woodworking 12 09-06-2005 09:25 PM
Sold: Router Table or Table Top -Sam- Woodworking Classifieds 10 01-29-2005 09:15 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome