Correct about the splice.  A pure endgrain to endgrain joint is pretty 
useless. If you are going to use a plug, the endgrain to endgrain 
portion splice  WILL create a poor glued joint, and the gradual change 
to  facegrain to facegrain  will improve the joint. However,  because 
the end grain has the least compression, it will help couple the 
stresses across the hole, whereas NOT having the plug in place will 
transfer the stresses around the hole, increasing the stress on the 
facegrain sections of the hole. My point is that it is better to have 
the plug in place for coupling the stresses.It also keeps the hole from 
flexing and eventually fatiguing.This also explains WHY it is better to 
have your grain orientation correct. To those who have luthier skills, I 
was taught to repair holes in guitars in this manner. You can do 
whatever you want to your plane, I'll use my "poppycock" in mine, thank 
you. I also reiterate that is better to use carpenters glue, due to the 
fact that it is meant to have a thin film, tight fitting joint for 
maximum effectiveness. Epoxy is thicker and will not create as good a 
joint in this application, as it will tend to squeeze out.

Glenn Martin
Biloxi, MS


On 12/4/2012 10:01 AM, jon kimmel wrote:
> That's true...the problem is the plug will result in end grain to end
> grain...which is not good joinery.  Basic rule of thumb...if the structure
> was ok with the hole it will be ok with the plug or an open hole.  If you
> need to restore strength because the hole was drilled wrong then you need
> to do a splice.
>
> https://sites.google.com/site/mykr2stretch/
> On Dec 4, 2012 9:50 AM, "peter" <jordanruths...@aol.com> wrote:
>
>> The structure of wood is heterogeonous, and complex. Reestablishing a
>> load-path through disrupted wood structure possible- it is called joining-
>> and is the basis of the KR structure. Any of the proven glues will work, as
>> will any filler material with traits similar to the structure being
>> repaired.(wood)
>>
>>
>>
>>
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