Thoughts About My Exact Width Dado Jig - Router Forums
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post #1 of 20 (permalink) Old 11-04-2016, 08:11 PM Thread Starter
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Default Thoughts About My Exact Width Dado Jig

Just sitting here thinking about what I can do to improve my router jig. I have eight base cabinets to build which will mean 16 dadoes cut 1/4 inch deep in the lower sections for the cabinet bottoms to fit in.

My jig works great, but I would like to either modify it or make a new one.

Basically, the dado will be cut 5 inches above the bottom of the cabinet side 1/4 inch deep on the inside. I am considering reversing my jig so the fixed side will be toward the lower part of the cabinet. Maybe even replace that piece of the jig with one that is exactly 4 1/4 inches wide so it can be clamped to the bottom edge of the cabinet piece.

Hmmm...that may or may not work out since the 3/4 inch plywood is really only .701 thick or something like that. That would position the bottom slightly below the edge of the face frame. But then, that would probably be OK.

Here is a pic of my jig in action and the Sketchup drawing.

Any suggestions?
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post #2 of 20 (permalink) Old 11-04-2016, 08:32 PM
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uuuuuuuuuh, yeah. Figuring these things out is what makes woodworking so much fun and challenging. You'll figure it out Mike, I have no idea what in the zxx you are talking about.

Jerry
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post #3 of 20 (permalink) Old 11-04-2016, 09:03 PM Thread Starter
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@Jerry I use the jig to cut dadoes in the sides of plywood cabinets, or drawers, or what ever.

With one side adjustable, you simply stick your work piece in and adjust the moveable side to snug, then tighten the knobs. The router bit bearing will follow the sides of the jig and make a perfect fitting dado.

Here are a few pics of the jig in action.
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post #4 of 20 (permalink) Old 11-04-2016, 11:13 PM
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I would put the jig on one side of the ply first Mike and set the gap. Then you have to decide which side you want to register from, 4 1/4 from the bottom or 5" at the top. If you want uniformity from unit to unit I would add two arms to it, one at each end with a cleat to hook the bottom of the gables. I would use a spacer block to set the cleats at the right distance and that should give you accuracy within a few thou.

Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.
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post #5 of 20 (permalink) Old 11-05-2016, 06:33 AM
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@MT Stringer

Most "commercial" cabinets seem to have the top of the face frame slightly proud of the floor so I would think that the fixed part of the jig should be located to give 4-1/4" from the edge/bottom of the panel, with the top of the face frame being 5". This give a little wiggle room if the plywood thickness deviates from the nominal 18 mm (.708").
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post #6 of 20 (permalink) Old 11-05-2016, 09:31 AM Thread Starter
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That is what I am thinking also.

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post #7 of 20 (permalink) Old 11-05-2016, 11:49 AM
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Pretty cool setup Mike , and it's simple to make . Looks like it does the job well , thanks for sharing

I can see I definitely need to build a decent work station one day with those bench dog holes and tracking
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post #8 of 20 (permalink) Old 11-05-2016, 03:59 PM Thread Starter
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I have a plan. I relocated two of the screws on the fixed side of the jig. I have a mark at 4 1/4 inches. When you add the width of the 3/4 inch plywood (sic), it will result in a dado that is just slightly less than 5 inches from the bottom of the cabinet member. Five inches is equal to the 3 1/2 inch high toe kick cut out plus 2 inches for the bottom face frame rail. As mentioned by Tom, that should make the face frame slightly proud of the cabinet bottom.

I am going to use my track saw to cut a strip off of the jig. I may have to make more than one pass. First one might be a little fat. Then I can adjust the track and cut it correctly.

Here's a couple of pics.

But first, the patio is open and the party is about to be on! The pit is warming up and my sweetie is prepping the jalapeno stuffed, bacon wrapped chicken breast!
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post #9 of 20 (permalink) Old 11-05-2016, 05:25 PM
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definitely time to move to the patio and join the party. Like the description of that chicken.
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post #10 of 20 (permalink) Old 11-05-2016, 05:28 PM
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Quote:
Originally Posted by JFPNCM View Post
definitely time to move to the patio and join the party. Like the description of that chicken.
I know , and I'm trying to diet lol
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