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  #1   Report Post  
dustyone
 
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Default cut my tenons too small. now what?

Hello,

I need to know if anyone has successfully corrected this problem. I'm
thinking of using some gorilla glue, which I'm told expands some.
Other than that I could put a layer of masking tape around the tenon
before gluing. This is the amount of play in the unglued joint (maybe
1/32 in.) The project is an end table, so it's not going to take alot
of heavy stress. Should I just glue and clamp as normal? I could
always re-make the stretchers, but if I can solve the problem another
way.... Thanks.

Curt Blood

  #2   Report Post  
stoutman
 
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Make wooden shims to fill the gap between the tenon and mortise. Glue them
to each face of the tenon. Gorilla glue will foam and expand, but does not
have a lot of strength once it expands to fill gaps.


"dustyone" wrote in message
oups.com...
Hello,

I need to know if anyone has successfully corrected this problem. I'm
thinking of using some gorilla glue, which I'm told expands some.
Other than that I could put a layer of masking tape around the tenon
before gluing. This is the amount of play in the unglued joint (maybe
1/32 in.) The project is an end table, so it's not going to take alot
of heavy stress. Should I just glue and clamp as normal? I could
always re-make the stretchers, but if I can solve the problem another
way.... Thanks.

Curt Blood



  #3   Report Post  
NorthIdahoWWer
 
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Default

You could cut some thin wood shims to fill the space. Set your table saw
fence so that when you run the wood through, the piece being cut off on the
outside of the blade is your shim. Trim it to fit, glue it to your tenon,
then assemble the tenon and mortise. Hope that helps.

Will


  #4   Report Post  
John Grossbohlin
 
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Default


"dustyone" wrote in message
oups.com...
Hello,

I need to know if anyone has successfully corrected this problem. I'm
thinking of using some gorilla glue, which I'm told expands some.
Other than that I could put a layer of masking tape around the tenon
before gluing. This is the amount of play in the unglued joint (maybe
1/32 in.) The project is an end table, so it's not going to take alot
of heavy stress. Should I just glue and clamp as normal? I could
always re-make the stretchers, but if I can solve the problem another
way.... Thanks.


Simply glue additional wood to the tenon with the grain oriented to match
the tenon. Allow the glue to dry and then saw and/or plane the tenon to the
correct dimension. You may need to glue the additional wood to both cheeks
so that the stretchers end up with the correct reveal relative to the legs.

John


  #5   Report Post  
Dave in Fairfax
 
Posts: n/a
Default

dustyone wrote:
I need to know if anyone has successfully corrected this problem. I'm
thinking of using some gorilla glue, which I'm told expands some.
Other than that I could put a layer of masking tape around the tenon
before gluing. This is the amount of play in the unglued joint (maybe
1/32 in.) The project is an end table, so it's not going to take alot
of heavy stress. Should I just glue and clamp as normal? I could
always re-make the stretchers, but if I can solve the problem another
way.... Thanks.


If they're through M&Ts, what about a wedge, same or contrasting
color, and turn it into a feature. It a Micro$oft thing.

Dave in Fairfax
--
Dave Leader
reply-to doesn't work
use:
daveldr at att dot net
American Association of Woodturners
http://www.woodturner.org
Capital Area Woodturners
http://www.capwoodturners.org/
PATINA
http://www.Patinatools.org/


  #6   Report Post  
Edwin Pawlowski
 
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Default


"dustyone" wrote in message
I need to know if anyone has successfully corrected this problem. I'm
thinking of using some gorilla glue, which I'm told expands some.
Other than that I could put a layer of masking tape around the tenon
before gluing. This is the amount of play in the unglued joint (maybe
1/32 in.)


Two things you can do.

Add a thin piece of wood do the tenon and re-cut them

Add a very thin piece, like plane shavings, to shim them.

If they are all the same undersize I'd probably opt for fix #1. If it is
only one tenon, #2 can be done. You won't regret doing a proper fix rather
than just trying to fill the void with poly glue. If you don't have one
already, get a Veritas shoulder plane so you can easily fit tenons that are
a smidgen oversized. Check for fit after every pass of the plane. It is
very satisfying to take a pass or two and have it slide in perfectly.
--
Ed
http://pages.cthome.net/edhome/


  #7   Report Post  
George Max
 
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Default

On 23 Apr 2005 19:06:04 -0700, "dustyone" wrote:

Hello,

I need to know if anyone has successfully corrected this problem. I'm
thinking of using some gorilla glue, which I'm told expands some.
Other than that I could put a layer of masking tape around the tenon
before gluing. This is the amount of play in the unglued joint (maybe
1/32 in.) The project is an end table, so it's not going to take alot
of heavy stress. Should I just glue and clamp as normal? I could
always re-make the stretchers, but if I can solve the problem another
way.... Thanks.

Curt Blood


I see you've gotten the wood shim idea, or you could use some veneer,
same thing. Consider carefully what faces of the tenons you adhere it
to since it will change the geometry of your piece slightly.

OR

You could glue things up with epoxy, epoxy is a good gap filling
adhesive. It's also totally irreversable once cured.

The foam of gorilla glue has no structural strength, don't go there.
  #8   Report Post  
Guess who
 
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Default

On Sat, 23 Apr 2005 19:19:39 -0700, "NorthIdahoWWer"
wrote:

You could cut some thin wood shims to fill the space. Set your table saw
fence so that when you run the wood through, the piece being cut off on the
outside of the blade is your shim. Trim it to fit, glue it to your tenon,
then assemble the tenon and mortise. Hope that helps.


Glood idea, but it doesn't have to be an exact size shim. Glue a
solid [thicker] piece that can be controlled to fit, then recut the
tenon to proper size.

  #9   Report Post  
Lew Hodgett
 
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Default

George Max wrote:

I see you've gotten the wood shim idea, or you could use some veneer,
same thing. Consider carefully what faces of the tenons you adhere it
to since it will change the geometry of your piece slightly.

OR

You could glue things up with epoxy, epoxy is a good gap filling
adhesive. It's also totally irreversable once cured.

The foam of gorilla glue has no structural strength, don't go there.


I like epoxy so would probably go that route.

If you use epoxy, thicken with some microballoons to make a better gap
filling material.

As George says, stay from Gorilla glue in this application.

Lew

  #10   Report Post  
Derrick
 
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Is there a reason why you can't make the mortise slightly larger? I agree
easier to use shims though. If its through tenons think about using
contrasting wood in shims to add interest. Either way you definitely don't
want too the joint too loose. Hope all goes well.

"dustyone" wrote in message
oups.com...
Hello,

I need to know if anyone has successfully corrected this problem. I'm
thinking of using some gorilla glue, which I'm told expands some.
Other than that I could put a layer of masking tape around the tenon
before gluing. This is the amount of play in the unglued joint (maybe
1/32 in.) The project is an end table, so it's not going to take alot
of heavy stress. Should I just glue and clamp as normal? I could
always re-make the stretchers, but if I can solve the problem another
way.... Thanks.

Curt Blood





  #11   Report Post  
Jeff Gorman
 
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Default


"dustyone"

I need to know if anyone has successfully corrected this problem. I'm
thinking of using some gorilla glue, which I'm told expands some.
Other than that I could put a layer of masking tape around the tenon
before gluing.


I fear that shimming the tenon cheeks with veneer is not a very satisfactory
solution. The cross sectional area of the tenon is less than intended, so it
is weaker than intended.

For a remedy that will stand the test of time, a false tenon would be the
best solution. Perhaps you would like to try my web site. Click on 'Blunder
Busting'.

Jeff G

--
Jeff Gorman, West Yorkshire, UK
email : Username is amgron
ISP is clara.co.uk
www.amgron.clara.net


  #12   Report Post  
Andy Dingley
 
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Default

On Sun, 24 Apr 2005 02:20:58 GMT, Dave in Fairfax
wrote:

If they're through M&Ts, what about a wedge,


Depends on the length. A wedged tenon will have some degree of
non-parallelism to the outside face. If you're having to expand this by
a whole 1/32" in a short tenon, then you're not going to get much grip
around the shoulder end of the tenon. It would work for the rails in a
small fully-framed table where there's bracing from other joints too,
but I wouldn't trust it in a chair.

Shim it. Square the tenon up, glue the shims on, let it dry well and
then re-cut them.

This sort of problem is why I always cut my tenons (which are easy)
after my mortices (which are hard).
  #13   Report Post  
dustyone
 
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Default

Thank you all for your ideas. I'm going to glue shims and re-cut the
tenons.

CB

  #14   Report Post  
Kc-Mass
 
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I would glue some veneer to both sides of the tenon then adjust with plane
if needed.

"dustyone" wrote in message
oups.com...
Hello,

I need to know if anyone has successfully corrected this problem. I'm
thinking of using some gorilla glue, which I'm told expands some.
Other than that I could put a layer of masking tape around the tenon
before gluing. This is the amount of play in the unglued joint (maybe
1/32 in.) The project is an end table, so it's not going to take alot
of heavy stress. Should I just glue and clamp as normal? I could
always re-make the stretchers, but if I can solve the problem another
way.... Thanks.

Curt Blood



  #15   Report Post  
George
 
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Default


"dustyone" wrote in message
oups.com...
Thank you all for your ideas. I'm going to glue shims and re-cut the
tenons.


Shims are one way of doing it.

Try using yellow glue, painting and dipping the tenon and scattering some
sawdust in the mortise to make it tight.

If you want an elegant solution, kerf and wedge.




  #16   Report Post  
Steven and Gail Peterson
 
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Default

How did you cut the mortises? Why not make matching mortises in the
stretchers after cutting off the undersize tenons, then use loose tenons cut
to the correct size?

Steve

"dustyone" wrote in message
oups.com...
Hello,

I need to know if anyone has successfully corrected this problem. I'm
thinking of using some gorilla glue, which I'm told expands some.
Other than that I could put a layer of masking tape around the tenon
before gluing. This is the amount of play in the unglued joint (maybe
1/32 in.) The project is an end table, so it's not going to take alot
of heavy stress. Should I just glue and clamp as normal? I could
always re-make the stretchers, but if I can solve the problem another
way.... Thanks.

Curt Blood



  #17   Report Post  
Roy Smith
 
Posts: n/a
Default

"dustyone" wrote:
I need to know if anyone has successfully corrected this problem.


Take some nice big shavings from some scrap of the same kind of wood with a
plane, and glue one to the face of the undersize tennon. When the glue is
dry, you can clean up the over hanging bits with a sharp knife.

I've used the technique more than once :-)
  #18   Report Post  
Tattooed and Dusty
 
Posts: n/a
Default


Derrick wrote:
Is there a reason why you can't make the mortise slightly larger? I

agree
easier to use shims though. If its through tenons think about using
contrasting wood in shims to add interest. Either way you definitely

don't
want too the joint too loose. Hope all goes well.


Does this make sense to anyone else? If the male end (the tenon) is too
small, enlarging the female end (the mortise) wont make a small male
member tight in the female member?

I mean I think this is self explanatory right?

  #19   Report Post  
Derrick
 
Posts: n/a
Default

You are correct it doesn't make sense. Sorry about that I didn't explain
very well.

After making mortise wider, glue in a plug of wood to fill cavity. Now you
can make a new mortise that is a little smaller than original allowing for a
beefier sidewall. Sorry for the confusion.

"Tattooed and Dusty" wrote in message
oups.com...

Derrick wrote:
Is there a reason why you can't make the mortise slightly larger? I

agree
easier to use shims though. If its through tenons think about using
contrasting wood in shims to add interest. Either way you definitely

don't
want too the joint too loose. Hope all goes well.


Does this make sense to anyone else? If the male end (the tenon) is too
small, enlarging the female end (the mortise) wont make a small male
member tight in the female member?

I mean I think this is self explanatory right?



  #20   Report Post  
Lawrence Wasserman
 
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Default

In article .com,
dustyone wrote:
Hello,

I need to know if anyone has successfully corrected this problem. I'm
thinking of using some gorilla glue, which I'm told expands some.
Other than that I could put a layer of masking tape around the tenon
before gluing. This is the amount of play in the unglued joint (maybe
1/32 in.) The project is an end table, so it's not going to take alot
of heavy stress. Should I just glue and clamp as normal? I could
always re-make the stretchers, but if I can solve the problem another
way.... Thanks.

Curt Blood


Make a shim from a plane shaving, or if the gap is large enough, wrap
the entire tenon with a shaving. Use glue on both sides of the shim.


--

Larry Wasserman Baltimore, Maryland


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