All Replies on Installing Metal inserts for threads in wood

  • Advertise with us
View Mike Turner's profile

Installing Metal inserts for threads in wood

by Mike Turner
posted 11-22-2018 01:23 AM

6 replies so far

View Phil32's profile


721 posts in 463 days

#1 posted 11-22-2018 02:01 AM

It would seem that the drill size would be larger for hard wood like oak. It is also important to let the threads of the insert guide the process. Either the installation of the insert ran beyond the desired point or some other force tore the threads in the wood.

-- Phil Allin - There are mountain climbers and people who talk about climbing mountains. The climbers have "selfies" at the summit! Likewise with woodworkers.

View knockknock's profile


473 posts in 2733 days

#2 posted 11-22-2018 02:12 AM

Besides tearing the threads (as Phil32 said). Are you backing out the jam nut and then the other nut, before backing out the drive screw (in hardwood the nuts can lock tight on the insert).

-- 👀 --

View waho6o9's profile


8799 posts in 3137 days

#3 posted 11-22-2018 02:41 AM

I would use a 5/16 bolt with a washer and impact the inserts in and then back out the bolt.

Practice on scraps and you’ll learn to finesse in the insert.

Proper pilot holes help a lot.


View pintodeluxe's profile


6014 posts in 3373 days

#4 posted 11-22-2018 03:55 AM

I use the type of threaded inserts that install with an Allen key. You can get them in tighter than the soft brass ones.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

View AlaskaGuy's profile


5432 posts in 2869 days

#5 posted 11-22-2018 04:33 AM

I use the type of threaded inserts that install with an Allen key. You can get them in tighter than the soft brass ones.

- pintodeluxe


-- Alaskan's for Global warming!

View William Shelley's profile

William Shelley

609 posts in 2029 days

#6 posted 11-26-2018 02:46 PM

Oak? Just drill and tap the threads right into the wood. If you’re concerned about durability, then flood the hole with epoxy or CA glue, and chase the threads with the tap after the adhesive cures. Wood will hold machine screw threads remarkably well. Even soft woods like Pine can be tapped for bolts with coarse threads, like 3/8 and larger.

-- Woodworking from an engineer's perspective

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics