Sleeve for grub screws

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JonnyCJ
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Sleeve for grub screws

Post by JonnyCJ » Wed Apr 24, 2019 3:47 pm

Really off topic one this, but I'm looking to use a grub screw in some soft material (wood/stone) that won't take a thread.

Is there such a thing as a pre-tapped sleeve available anywhere ? Looking for a pretty small sleeve approx. 3mm diameter which can be glued in place to take a grub screw.

Cheers

Jonny

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type21f
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Re: Sleeve for grub screws

Post by type21f » Wed Apr 24, 2019 4:23 pm

Time serts immediately came to mind..but in the past I had a range of small taps a tapped some alloy tubing for a similar use.
Helicoils work on the basis of cutting a larger hole and tapping threading them into metal. Then the fixing engages on the inner diameter.
If you can get those in the size and thread pitch you could glue them into the material with some thing like araldite and then use your fixing.
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Topic Author
JonnyCJ
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Re: Sleeve for grub screws

Post by JonnyCJ » Wed Apr 24, 2019 9:43 pm

Thanks G - knew you’d know :D

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type21f
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Re: Sleeve for grub screws

Post by type21f » Wed Apr 24, 2019 9:53 pm

:oops:
Practical problem solving..
Like my son fixing a slate house name plate into a mortar joint on a stone cottage this very week end!
Exactly what he did. Drill a BIG hole and glue nylon fixings in the hole and then screwed machine type bolts into the nylon which formed their own thread..
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1965 Devon Caravette, L360 L289 Hammock, Tent, M W Pop
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Re: Sleeve for grub screws

Post by Rocket Ron » Tue Sep 24, 2019 2:12 pm

I knew he'd know that...we all knew...
There is a rivet type thing I use, might not be any good on wood, I have used it on bays before now, on the screw that holds the Headlight ring on, dill the hole to the size of the insert, then I got a bit of kit that screws into that, acts like a rivet gun, compresses the insert so it expands and fills the space, unscrew your tool, as the insert has a thread , bingo.....

But you probably knew that anyway..
Sometimes when you have set the benchmark, the only one you have to beat is yourself !

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