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Installing Metal Inserts for Wood (Read 213 times)
 
Mike Turner
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Installing Metal Inserts for Wood
Nov 21st, 2018 at 8:01pm
 
I used some 5/16" and 3/8" metal inserts for threads on this project/jig not long ago. It was in soft wood.They worked out fine.

Now I need to put some 5/16"-18 in some oak on this same project.Ive tried drilling different sizes on the holes but I always pull the insert out when backing the guide bolt out...

Im using this method and it worked fine in the soft wood...

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Im ready to finish this up. Help!!
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Ed Weber
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Re: Installing Metal Inserts for Wood
Reply #1 - Nov 21st, 2018 at 8:37pm
 
I use a T-handle insert tool like this
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Jeff Vanden Boogart
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Re: Installing Metal Inserts for Wood
Reply #2 - Nov 21st, 2018 at 9:17pm
 
Maybe run a tap in the hole first?
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chris lawrence
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Re: Installing Metal Inserts for Wood
Reply #3 - Nov 21st, 2018 at 9:18pm
 
Use a nut on the bolt. Put the nut on then the insert. Tighten the nut down on the insert so there is some space between the head and the nut. When you get the insert in use 2 wrenches one on the head and one on the nut to loosen the nut then unthread the bolt from the insert.  If the insert is permanent put a drop of wood glue on the outside of the insert before you tread it in.
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« Last Edit: Nov 21st, 2018 at 9:20pm by chris lawrence »  
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Glenn Roberts
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Re: Installing Metal Inserts for Wood
Reply #4 - Nov 22nd, 2018 at 12:38pm
 
Mike, the friction between the wood and the insert is lower than between the bolt and the insert -- as you know. I would adjust the hole size and wax the bolt threads. Or glue the insert, or all of the above.
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Ed Weber
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Re: Installing Metal Inserts for Wood
Reply #5 - Nov 22nd, 2018 at 3:35pm
 
To the OP and others, I say do what works for you, BUT

There are many versions of threaded inserts for wood, straight, tapered, slotted, hex drive and those designed for hardwood, softwood and composite products, to name only a few.
I don't know what style the OP is struggling with.

The man in the video states that the slot in the inserts are for tapping or cutting threads, this is only partially true and as usual, can be misleading. Only certain styles are designed to do this, not every insert with a slot is designed to cut threads.

One other thing, if you plan on installing more than about three of these, do yourself a favor and get the insert tool. The tool is faster, easier, has less moving parts and is more accurate. The insert tool has a machined shoulder that seats squarely on the insert, this is more accurate than a pair of jamb nuts.

JMO
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Mike Turner
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Re: Installing Metal Inserts for Wood
Reply #6 - Nov 22nd, 2018 at 8:04pm
 
I got them installed.Thanks guys!
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David Fritz
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Re: Installing Metal Inserts for Wood
Reply #7 - Nov 26th, 2018 at 8:30am
 
Occasionally when inserting them on the lathe with the bolt and two nuts like Chris mentioned the insert goes in a little crooked. When I screw in the ice cream scoop it wobbles from side to side a little. It's not bad enough to leave a gap between the scoop and the ring (Woodcraft Kit) but it's bothersome to see it wobble like that. Any advice on avoiding that?
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Ed Weber
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Re: Installing Metal Inserts for Wood
Reply #8 - Nov 26th, 2018 at 9:15am
 
Do you have any way of holding the bolt (or other insertion tool) in the tailstock?
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David Fritz
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Re: Installing Metal Inserts for Wood
Reply #9 - Nov 26th, 2018 at 3:26pm
 
I have a indentation in the center of the bolt and use a cone center in the tail stock to push the insert in as I turn the bolt.
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Ed Weber
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Re: Installing Metal Inserts for Wood
Reply #10 - Nov 26th, 2018 at 6:52pm
 
Well, I guess I do it differently.
I insert the threaded insert off the lathe. I also tap the hole first if possible. Using epoxy, I mount the insert a 1/16" or so below the surface to allow for truing up the end. Then I use the threaded insert as the drive for the blank. I screw the blank onto a threaded mandrel, a chucked up bolt will work too. This way the blank is turned inline with the insert keeping everything straight. It also makes it easy to finish the end of the handle once parted off.
This is basically the same way as described in the WC videos
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David Fritz
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Re: Installing Metal Inserts for Wood
Reply #11 - Nov 27th, 2018 at 8:19am
 
Thank you for pointing that out. I wasn't aware that it was even there.
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Ed Weber
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Re: Installing Metal Inserts for Wood
Reply #12 - Nov 27th, 2018 at 9:54am
 
I hope you give it a try, it works for me. As they say, your mileage may vary
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