Difficult joinery question - Page 2 - Woodworking Talk - Woodworkers Forum
Old 02-23-2019, 09:03 AM
where's my table saw?

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I think there's a length issue ...

The length of bit exposed after using a 45 degree wedge wouldn't be enough to make the slot, just a wild guess.
The dado set will work better because the work lays flat on the table and the blades need only be raised for the bottom blade to pierce the 5/8" thickness of the plywood:
a sqrd + b sqrd = c sqrd, where a and b equal .625" and c is the sq root of .780" or .8831" ... unless my 6th grade math is faulty .......

The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)
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Old 02-23-2019, 12:28 PM
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Note to OP, this is a dangerous procedure, and you are getting information from some that have no previous experience, please be careful.

“Everything we hear is an opinion, not a fact. Everything we see is a perspective, not the truth.”
― Marcus Aurelius
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Old 02-23-2019, 01:11 PM
where's my table saw?

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That's for certain .....

Quote:
Originally Posted by FrankC View Post
Note to OP, this is a dangerous procedure, and you are getting information from some that have no previous experience, please be careful.

No one here has done this exact procedure. WE are counting on you, who has the motivation and inspiration to be cautious and IF it doesn't feel right to you don't do it. As always, we take no responsibility if something should go awry. Those of us who have offered free advice, do so only trying to assist, but the advice is only worth what it costs.... just sayin'

The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)
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Old 02-23-2019, 05:02 PM
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Quote:
Originally Posted by woodnthings View Post
The length of bit exposed after using a 45 degree wedge wouldn't be enough to make the slot, just a wild guess.
The dado set will work better because the work lays flat on the table and the blades need only be raised for the bottom blade to pierce the 5/8" thickness of the plywood:
a sqrd + b sqrd = c sqrd, where a and b equal .625" and c is the sq root of .780" or .8831" ... unless my 6th grade math is faulty .......
I have a DeWalt DW618 router kit and using the plunge base the bit would have to extend 3 inches from the bottom of the base to make the cut. I found a bit with a total length of 4 1/2" so doable?
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Old 02-23-2019, 05:49 PM
where's my table saw?

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mathematically possible, so sure try it ......

Quote:
Originally Posted by JIMMIEM View Post
I have a DeWalt DW618 router kit and using the plunge base the bit would have to extend 3 inches from the bottom of the base to make the cut. I found a bit with a total length of 4 1/2" so doable?

I wouldn't do it, there's just too much unsupported length and chances for vibration or breakage. It's also just a "weird" setup and more chances for things to go awry in my opinion, but if there's a "throw caution to the wind" in you, go for it!

The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)

Last edited by woodnthings; 02-23-2019 at 06:24 PM.
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Old 02-23-2019, 06:22 PM
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I think I would use a track saw from both sides, then clean it up with a jig saw, maybe a little file work.(or a circular saw as recommended by timpa) It seems to me that there are just too many opportunities to mess up using a table saw.

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Old 02-23-2019, 06:31 PM
where's my table saw?

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opportunities to mess up?

Quote:
Originally Posted by danrush View Post
I think I would use a track saw from both sides, then clean it up with a jig saw, maybe a little file work.(or a circular saw as recommended by timpa) It seems to me that there are just too many opportunities to mess up using a table saw.

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So, setting a track saw to exactly a 5/8" width on two sides of a panel requiring 2 measurements for each single blade cut, which is 8 setup measurements in total, doesn't give you "opportunities to mess up"?
On the table saw, you'd make 1 test cut to determine your fence setting and away you go......

The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)
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Old 02-23-2019, 06:57 PM
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Does a track saw tilt both ways? None of my circular saws do.

Gary
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Old 02-23-2019, 07:05 PM
where's my table saw?

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I know they don't tilt both ways, so the feed direction would have to be the same on one side and opposite on the other side, unless my mind isn't wrapping around this concept. I'm almost to the point of doing this myself, even though it would require quite a setup and involving the dado blades which I hate dealing with.

I have done some complicated miter cuts on the table saw:
https://www.woodworkingtalk.com/f2/l...allenge-33352/

The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)
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Old 02-23-2019, 07:18 PM
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Why would a track saw have to tilt both ways? Probably be the safest method, as suggested by Packard way back when.

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Old 02-23-2019, 07:23 PM
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Looks like Routerhead decided on a method 2 days ago.

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Old 02-23-2019, 07:27 PM
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Quote:
Originally Posted by woodnthings View Post
So, setting a track saw to exactly a 5/8" width on two sides of a panel requiring 2 measurements for each single blade cut, which is 8 setup measurements in total, doesn't give you "opportunities to mess up"?
On the table saw, you'd make 1 test cut to determine your fence setting and away you go......
What I'm seeing in my mind is:
Cut the 5/8" groove through the ply on one side to lines or stops. Yes, two cuts.
Flip the board and you have the saw kerfs to set the track, no need to measure width again. Two cuts.
The only thing left is to cut the two ends. Drill, jig saw or chisel.

Just a different take. As a site guy, don't always go to the table saw first.

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Old 02-23-2019, 07:30 PM
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Sorry, I missed Packard's earlier post. I just repeated his idea.

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Old 02-23-2019, 07:30 PM
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Quote:
Originally Posted by gmercer_48083 View Post
Looks like Routerhead decided on a method 2 days ago.

“Everything we hear is an opinion, not a fact. Everything we see is a perspective, not the truth.”
― Marcus Aurelius
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Old 02-23-2019, 07:34 PM
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Quote:
Originally Posted by FrankC View Post

He is the original Poster asking the original question...You are funny Frank!

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Old 02-23-2019, 07:53 PM
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Quote:
Originally Posted by gmercer_48083 View Post
He is the original Poster asking the original question...You are funny Frank!
After a certain point all you can do is hope the OP got enough help to accomplish what he set out to do in a safe manner.

“Everything we hear is an opinion, not a fact. Everything we see is a perspective, not the truth.”
― Marcus Aurelius
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Old 02-23-2019, 10:26 PM
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Quote:
Originally Posted by FrankC View Post
After a certain point all you can do is hope the OP got enough help to accomplish what he set out to do in a safe manner.
And that he is at home with all ten.

Rich
In furniture 1/32" is a Grand Canyon
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