Back Tapering Round Mortises...

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Forum topic by mmcc73 posted 08-04-2017 03:02 PM 496 views 0 times favorited 2 replies Add to Favorites Watch
View mmcc73's profile


29 posts in 650 days

08-04-2017 03:02 PM

Hi – in the Lee Valley listing for their standard taper reamer –,180,42240,53317,54864 – they refer to it being useful for “back-tapering holes for through-tenon wedging”.

The seems like it would be an effective way to make extra sure chair stretchers don’t work their way out of their mortises. However, I haven’t seen this technique described elsewhere.

Is this a somewhat standard approach? Any gotchas I should be aware of?

2 replies so far

View Aj2's profile


1421 posts in 1820 days

#1 posted 08-04-2017 04:11 PM

Mmcc the picture says it all.
Your job will be to make a wedge that’s fills the gap nicely.
Always do a test run on new stuff I would go as far as cutting my test piece down the middle.To see what I made for my own peace of mind.
Good Luck

-- Aj

View shipwright's profile


7992 posts in 2820 days

#2 posted 08-04-2017 04:58 PM

As mentioned in your other thread, I think that through boring legs and stretchers would weaken them unnecessarily.
I prefer this method and have had excellent results over time


-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fibreglass trees.

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