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All Replies on Installing Metal inserts for threads in wood

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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

Phil32

540 posts in 292 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!

View knockknock's profile

knockknock

469 posts in 2561 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

waho6o9

8648 posts in 2965 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.

HTH

View pintodeluxe's profile

pintodeluxe

5934 posts in 3201 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

AlaskaGuy

5278 posts in 2697 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


These?

https://www.homedepot.com/p/Everbilt-1-4-in-20-tpi-x-20-mm-Zinc-Plated-Steel-Type-D-Insert-Nut-4-Pack-801884/204274222?MERCH=REC-_-PIPHorizontal2_rr-_-202242363-_-204274222-_-N

-- Alaskan's for Global warming!

View William Shelley's profile

William Shelley

609 posts in 1858 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

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