Dado Cut, can a Mortise bit do it? - Router Forums
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post #1 of 13 (permalink) Old 05-24-2020, 09:54 AM Thread Starter
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Default Dado Cut, can a Mortise bit do it?

Looking to make a couple dado cuts in some plywood, wondering if a mortise bit can do them, the ones without the bearing on top? I don't currently have access to a double flute straight bit that can do 3/4 inch. Thank you.
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post #2 of 13 (permalink) Old 05-24-2020, 10:20 AM
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Hello N/A and welcome to the forums...

yes a mortise bit will work just fine...

This would have been the week that I'd have finished chewing thru the restraints...
If only new layers hadn't been added....

Stick....
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post #3 of 13 (permalink) Old 05-24-2020, 11:49 AM
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If the dado is going to accept a piece of plywood, you might want to search for "exact width dado jig"

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post #4 of 13 (permalink) Old 05-24-2020, 12:32 PM
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Originally Posted by kp91 View Post
If the dado is going to accept a piece of plywood, you might want to search for "exact width dado jig"
we got that covered...

.
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This would have been the week that I'd have finished chewing thru the restraints...
If only new layers hadn't been added....

Stick....
Forget the primal scream, just ROAR!!!
"SNORK Mountain Congressional Library and Taxidermy”
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post #5 of 13 (permalink) Old 05-24-2020, 01:44 PM
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I like the mortise bit for dados because it cuts a nice, flat bottom. With the jig, I prefer to use a bit that's slightly smaller than the dado and come back for second pass to cut perfect width.

The more I do, the less I accomplish.
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post #6 of 13 (permalink) Old 05-24-2020, 04:59 PM
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The easy way is with a mortise bit with shaft mounted bearing of the same o d as the bit. Then all you have to do is take a straight edge and line it up with your dado marks. You can still do it with one without a bearing (using a straight edge) but you have to measure the offset between the bit and the edge of the router’s base and move the straight edge over that much.

As was mentioned, plywood is never exactly the thickness it is sold for. It starts out that way but then gets sanded smooth which leaves it undersize. Your best bet is to use a bit smaller than the ply, for example a 1/2” bit for 3/4 ply, and rout both sides of the channel separately.

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 #7 of 13 (permalink) Old 05-24-2020, 11:09 PM Thread Starter
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Thanks for all the responses! I'm very new to routing, but excited to see everything that can be done with it.
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post #8 of 13 (permalink) Old 05-25-2020, 12:02 AM
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Welcome to the forum.
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post #9 of 13 (permalink) Old 05-25-2020, 02:48 AM
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Quote:
Originally Posted by Bluevyper View Post
Thanks for all the responses! I'm very new to routing, but excited to see everything that can be done with it.
@Bluevyper ...
Hey Sig, about your desire to learn...
Have we got some light reading for you...
As in, we've put some helpful information together at this here link to help you get up and running in the world of routers... We hope it to be useful to you... Enjoy...
Do take some time and read the safety PDF's... PLEASE!!!
Blood and trips to the ER, we find, are very annoying... Not to mention – expensive...

DUST COLLECTION

There is some information on dust collection w/ your health in mind at this here link if it you need it...

ROUTER TABLES
there's more here at this link on RT's than you'll be able to digest at one sit down (or many)...

This would have been the week that I'd have finished chewing thru the restraints...
If only new layers hadn't been added....

Stick....
Forget the primal scream, just ROAR!!!
"SNORK Mountain Congressional Library and Taxidermy”
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post #10 of 13 (permalink) Old 05-25-2020, 07:32 AM
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Welcome to the forum Sig.
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