I used a 3/4" router bit to create a dado for 3/4" plywood. Yep, you
know it. And I know it too. How and why I did it is beyond me. At any
rate, the wood does not have a tight fit. I'd like to fill the dado (or
even a partial fill) and do it again. Can this be done? If so, with
what? Will it be as strong or should I try something different?
--
On Jun 2, 4:06=A0pm, "Lee Michaels" <[email protected]> wrote:
>
> Well, you could just use the old finish carpenters trick. =A0Just nail it =
in
> there and fill with lots and lots of silicone caulking!
You jest, but a gap-filling glue (Liquid Nails is cheap)
can make it work. When my tenons are too loose,
and it's not an heirloom project, out comes the caulk gun
and thick glue...
If it has to be 'right', a 1/8" veneer ripped with the
table saw can be glued into the dado, then router-trim one
side of the inset piece to match. Fully housed tenons
and/or half-housed are the only way to make plywood
joinery like this work, IMHO. The plywood thickness
is indeterminate by 0.050", and the router bit is only
accurate to maybe 0.020", in my experience.
Glen wrote:
> If you decide to shim the dado with a veneer strip, do it on the
> bottom where it will show less. On most shelves, it will never be
> seen unless it is above eye level. In that case put the shim on the
> bottom.
> >
> > --
This is exactly what I planned to do. The veneer strip is exactly the
thickness needed too. Thanks!
--
On Sun, 1 Jun 2008 19:31:37 -0500, "Leon" <[email protected]> wrote:
>
><dan> wrote in message news:[email protected]...
>>I used a 3/4" router bit to create a dado for 3/4" plywood. Yep, you
>> know it. And I know it too. How and why I did it is beyond me. At any
>> rate, the wood does not have a tight fit. I'd like to fill the dado (or
>> even a partial fill) and do it again. Can this be done? If so, with
>> what? Will it be as strong or should I try something different?
>
>
>Add thin strips to the piece that should fit into the dado so that it fits
>snugly in the dado.
>
Damn, talk about taking the easy way out.. lol
I'm trying to decide if a 3/4" strip to fill the dado or a thin piece inside the
dado would be best, and you come up with a logical answer... not fair..
mac
Please remove splinters before emailing
"Lee Michaels" <[email protected]> wrote in message
news:[email protected]...
>
> "mac davis" wrote
>
>> "Leon" wrote:
>>>
>>>Add thin strips to the piece that should fit into the dado so that it
>>>fits
>>>snugly in the dado.
>>>
>> Damn, talk about taking the easy way out.. lol
>> I'm trying to decide if a 3/4" strip to fill the dado or a thin piece
>> inside the
>> dado would be best, and you come up with a logical answer... not fair..
>>
>
> <sarcasm mode on>
>
> Well, you could just use the old finish carpenters trick. Just nail it in
> there and fill with lots and lots of silicone caulking!
>
> <sarcasm mode off>
Yeah! Swingman and I are quite familiar with that approach.
<dan> wrote in message news:[email protected]...
>I used a 3/4" router bit to create a dado for 3/4" plywood. Yep, you
> know it. And I know it too. How and why I did it is beyond me. At any
> rate, the wood does not have a tight fit. I'd like to fill the dado (or
> even a partial fill) and do it again. Can this be done? If so, with
> what? Will it be as strong or should I try something different?
Add thin strips to the piece that should fit into the dado so that it fits
snugly in the dado.
"dan" <> wrote in news:[email protected]:
> I used a 3/4" router bit to create a dado for 3/4" plywood. Yep, you
> know it. And I know it too. How and why I did it is beyond me. At any
> rate, the wood does not have a tight fit. I'd like to fill the dado (or
> even a partial fill) and do it again. Can this be done? If so, with
> what? Will it be as strong or should I try something different?
Options:
1. Rip some 3/4" scrap to exactly fill the dado, but just a little thick.
Glue it in. Sand smooth.
2. Go ahead and install your shelf. Use both glue and screws to hold it in
place. Heck, use some biscuits, too. Fill the very slight gap with wood
filler. It will disappear when you paint.
--
Steve B.
New Life Home Improvement
> I used a 3/4" router bit to create a dado for 3/4" plywood. Yep, you
> know it. And I know it too. How and why I did it is beyond me. At any
> rate, the wood does not have a tight fit. I'd like to fill the dado (or
> even a partial fill) and do it again. Can this be done? If so, with
> what? Will it be as strong or should I try something different?
First, they do make router bits sized to match the actual size of 3/4"
plywood. But I'm sure you know that by now... :)
In addition to the other suggestions mentioned, I have one other possible
solution. Use thicker plywood for the cross piece, or glue a couple of thin
sheets together, then rabbet the ends so they fit the dado properly.
One final idea, save the miscut board for a future project, and prepare a
new sheet with the properly sized dados.
Anthony
"mac davis" wrote
> "Leon" wrote:
>>
>>Add thin strips to the piece that should fit into the dado so that it fits
>>snugly in the dado.
>>
> Damn, talk about taking the easy way out.. lol
> I'm trying to decide if a 3/4" strip to fill the dado or a thin piece
> inside the
> dado would be best, and you come up with a logical answer... not fair..
>
<sarcasm mode on>
Well, you could just use the old finish carpenters trick. Just nail it in
there and fill with lots and lots of silicone caulking!
<sarcasm mode off>
"mac davis" <[email protected]> wrote in message
news:[email protected]...
> On Sun, 1 Jun 2008 19:31:37 -0500, "Leon" <[email protected]>
> wrote:
>
>>
>><dan> wrote in message news:[email protected]...
>>>I used a 3/4" router bit to create a dado for 3/4" plywood. Yep, you
>>> know it. And I know it too. How and why I did it is beyond me. At any
>>> rate, the wood does not have a tight fit. I'd like to fill the dado (or
>>> even a partial fill) and do it again. Can this be done? If so, with
>>> what? Will it be as strong or should I try something different?
>>
>>
>>Add thin strips to the piece that should fit into the dado so that it fits
>>snugly in the dado.
>>
> Damn, talk about taking the easy way out.. lol
> I'm trying to decide if a 3/4" strip to fill the dado or a thin piece
> inside the
> dado would be best, and you come up with a logical answer... not fair..
Sorry, and sorry to say I had to learn the hard way also. ;~)
<dan> wrote:
>I used a 3/4" router bit to create a dado for 3/4" plywood. Yep, you
> know it. And I know it too. How and why I did it is beyond me. At
> any
> rate, the wood does not have a tight fit. I'd like to fill the dado
> (or
> even a partial fill) and do it again. Can this be done? If so, with
> what? Will it be as strong or should I try something different?
Cut the dado oversize, say 1-1/2, then glue in a piece of stock that
matches.
When cured, sand smooth and recut.
Lew
<dan> wrote in message news:[email protected]...
>I used a 3/4" router bit to create a dado for 3/4" plywood. Yep, you
> know it. And I know it too. How and why I did it is beyond me. At any
> rate, the wood does not have a tight fit. I'd like to fill the dado (or
> even a partial fill) and do it again. Can this be done? If so, with
> what? Will it be as strong or should I try something different?
>
Cut a thin strip and glue it in place, then recut the proper size.