Threaded Inserts Measuring
- Thread starter markjg123
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You would need to attach to a thin timber , and not ideal for hanging on as fabric falls easily from round knobs.
Could you explain how an insert would work as they already have internal thread ?
Could you explain how an insert would work as they already have internal thread ?
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I assumed (perhaps wrongly) that I could buy an insert with the same thread size as the bolt.
I don't understand this. Sorry.
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If the threaded bar unscrews from the knobs then you mark it with a pen before you unscrew. The pen reveals how far into the knob it was screwed. You but bolts that length plus the thickness of the material you will attach to. If you can't find exactly that length of bolt buy ~10mm longer, then cut the end off the bolt
If the threaded bars are fixed irremovably into the knobs, you drill a small hole in the surface on which you will mount the knobs, then partly drill from the back, a shallow, wider hole such that there is enough space inside the hole to get a washer and nut in and also the tips of some needle nosed pliers holding the nut while you screw it up, so that you end up with the nut attached to the threaded bar, at the bottom of a shallow, (say) 10mm wide hole.
If the surface on which you will mount these is soft (eg pine) you could also consider drilling this "not all the way though" hole very slightly smaller diameter than the diameter of the widest part of the nut, screw the nut onto the threaded bar about half way, push the whole assembly into the door from the back, then unscrew the knob so that you and up with a nut wedged into the wood, well aligned with the hole, then re-screw the knob in from the front
Once you have worked out what depth you need the back hole to be, wrap some electrical tape around the drill bit you use to mark the depth you will drill the hole out to
If the threaded bars are fixed irremovably into the knobs, you drill a small hole in the surface on which you will mount the knobs, then partly drill from the back, a shallow, wider hole such that there is enough space inside the hole to get a washer and nut in and also the tips of some needle nosed pliers holding the nut while you screw it up, so that you end up with the nut attached to the threaded bar, at the bottom of a shallow, (say) 10mm wide hole.
If the surface on which you will mount these is soft (eg pine) you could also consider drilling this "not all the way though" hole very slightly smaller diameter than the diameter of the widest part of the nut, screw the nut onto the threaded bar about half way, push the whole assembly into the door from the back, then unscrew the knob so that you and up with a nut wedged into the wood, well aligned with the hole, then re-screw the knob in from the front
Once you have worked out what depth you need the back hole to be, wrap some electrical tape around the drill bit you use to mark the depth you will drill the hole out to
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I can't drill from the other side because I want to attach them to a bedroom door.
Not explained how an insert ? Would help ?
Do you mean these?
Yes. That sort of thing. Come in different sizes.
These.
It's a Howdens white panelled certified fire door.
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