Results 1 to 7 of 7

Thread: Auto Adjust Router Dado Jig - 1

  1. #1
    Join Date
    Apr 2007
    Location
    No, not all of SoCal is Los Angeles!
    Posts
    8,983

    Auto Adjust Router Dado Jig - 1

    Don made the mistake of asking for more jig posts so here's the next with more to follow. The concept of the jig has different versions. For any version you want some flat stable lumber. I had an old maple table top that was part of my parents newlywed furniture 50-odd years ago. It had picked up some water damage while making it's travels from one of my dad's garages to the other over the years. I ended up with it and it has been waiting for a second life.

    The jig requires two guide rails to control the width of the cut and two end rails to support the guide rails.

    Click image for larger version. 

Name:	wood cuts.jpg 
Views:	152 
Size:	57.7 KB 
ID:	7291

    The general layout allows the guide rails to open and close for different widths of dados.

    Click image for larger version. 

Name:	general layout.jpg 
Views:	141 
Size:	57.2 KB 
ID:	7296

    Over to the drill press to drill some starter holes for the adjustment slots.

    Click image for larger version. 

Name:	starter holes.jpg 
Views:	118 
Size:	52.9 KB 
ID:	7301

    On the narrow guide rail I also need a hole for the carrige bolt and a recess for the head of the bolt.

    Click image for larger version. 

Name:	recess holes.jpg 
Views:	114 
Size:	58.8 KB 
ID:	7299

    As my router table was down I used the old standby to cut the slots.

    Click image for larger version. 

Name:	slots.jpg 
Views:	184 
Size:	79.4 KB 
ID:	7302

    Cont'd in Part 2
    Last edited by glenn bradley; 04-15-2007 at 06:34 PM.

  2. #2
    Join Date
    Apr 2007
    Location
    No, not all of SoCal is Los Angeles!
    Posts
    8,983

    Auto Adjust Router Dado Jig - Part 2

    To allow the router bit collar to ride along the guide I cut some rabbets. I make the cut deep enough so that in a later step the collar will ride in the rabbet and the bit will cut the extending shelf of the rabbet to size.

    Click image for larger version. 

Name:	coller.jpg 
Views:	135 
Size:	50.1 KB 
ID:	7308

    Here's a shot of trimming the rabbet 'shelf' to create a sort of zero clearance reference edge on the guides. I now know using this guide and bit, the cut will be right on that edge.

    Click image for larger version. 

Name:	coller and bit.jpg 
Views:	131 
Size:	43.8 KB 
ID:	7309

    With that done I can attach the side rails permanently to the wide guide rail.

    Click image for larger version. 

Name:	attach rails.jpg 
Views:	104 
Size:	52.2 KB 
ID:	7310

    With the side rails attached I add the carriage bolts, fender washers and some knobs for the narrow guide rail which moves to set the dado width.

    Click image for larger version. 

Name:	knobs and washers.jpg 
Views:	145 
Size:	46.4 KB 
ID:	7311

    Now using the slots in the side rails and the carriage bolts and knobs, I can size the dado width using the actual material that will occupy the dado.

    Click image for larger version. 

Name:	set jig width.jpg 
Views:	136 
Size:	56.6 KB 
ID:	7316
    Click image for larger version. 

Name:	jig to material.jpg 
Views:	119 
Size:	55.6 KB 
ID:	7313

    Then I make the cut.

    Click image for larger version. 

Name:	cut dado.jpg 
Views:	150 
Size:	63.4 KB 
ID:	7314

    Now even if my material ends up being an odd thickness I can still make a nice tight dado.

    Click image for larger version. 

Name:	perfect fit.jpg 
Views:	132 
Size:	41.3 KB 
ID:	7315
    Last edited by glenn bradley; 04-23-2007 at 02:43 AM.

  3. #3
    Don Taylor is offline Former Member (by the member's request)
    Join Date
    Jan 2007
    Posts
    1,289

    The Bandit Strikes Again!

    Now THAT'S my kind of post!
    Thank you Glenn.
    I have seen this jig but never in such an easy to make manor.
    This way each step has a reason and a picture. This wil make a nice PDF file.

    Keep-em-Commin' Glenn this is wonderful!

    DT

  4. #4
    Join Date
    Apr 2007
    Location
    No, not all of SoCal is Los Angeles!
    Posts
    8,983
    Thanks Don. I forgot to mention that I have used the "rabbet shelf" along the edge of longer boards for a more accurate edge trimming guide with the same router, collet and bit set up. I just used this method to trim some large panels for a workbench I have in progress as I don't have a Festool or EZ smart rig.

    Thanks again!

  5. #5
    Join Date
    Oct 2006
    Location
    Tokyo Japan
    Posts
    15,582
    That is really good Glenn, thanks for posting it.

    I've never thought of using the template guide for that, smart thinking!



    Cheers!
    The pessimist complains about the wind; the optimist expects it to change; the realist adjusts the sails.
    William Arthur Ward

  6. #6
    Join Date
    Oct 2006
    Location
    ABQ NM
    Posts
    29,079
    Quote Originally Posted by Stuart Ablett View Post
    That is really good Glenn, thanks for posting it.

    I've never thought of using the template guide for that, smart thinking!



    Cheers!
    I've thought of the template guide, but not the rabbet "shelf" to account for its thickness. Great idea.

    Great post, Glenn.
    When the going gets weird, the weird turn pro. - Hunter S. Thompson
    When the weird get going, they start their own forum. - Vaughn McMillan

    workingwoods.com

  7. #7
    Join Date
    Apr 2007
    Location
    New Brunswick Canada
    Posts
    28
    Thanks for the great post.
    I was out of luck when luck was doing alright.
    John Hiatt.

Similar Threads

  1. Auto Width Dado Jig 2.0
    By glenn bradley in forum Jigs and Fixtures
    Replies: 11
    Last Post: 09-17-2014, 10:26 PM
  2. Replies: 5
    Last Post: 05-05-2012, 02:11 PM
  3. Bessey Auto-adjust Toggle Clamps
    By glenn bradley in forum Hot Deals
    Replies: 2
    Last Post: 09-16-2011, 03:13 AM
  4. Router Dado Jig - An Old Friend
    By glenn bradley in forum Jigs and Fixtures
    Replies: 6
    Last Post: 02-07-2009, 10:36 PM
  5. Auto Adjust Router Dado Jig - Glenn Bradley
    By glenn bradley in forum Tips and Tutorials
    Replies: 1
    Last Post: 04-15-2007, 06:04 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •