How to glue back a hygrometer of an oblong case?
the hygrometer that came with my oblong violin case was defective so I took it out. It was glued to the case. I bought a hygrometer (regular small round golden one) and I see all of them have this hole in the back plate.
Is this hole for the air to come inside the hygro?
If it is, then the one that came with my case, even if it wasn't defective, couldn't work.
This is the case:
How should I glue it to the case and what kind of glue should I use?
In case somebody tells me these hygros are more for decoration, I know, but right know the case has a very ugly hole there and also one of these is better than nothing.
You could try some Velcro instead of glue as it would not be so troublesome to remove if you wanted to change it again amd it is also inexpensive.
I used fabric glue to glue the magnet that came with my humidifier to the bottom of my case. It work great! Some glues can melt fabrics/foam, ect so I’d use fabric glue.
But then how would the humidity of the air penetrate the hygro if I glue it and seal its only hole?
I'd stick a photo of you family or other favorite people over the hole in your case, and stow the hygrometer in the case pocket.
I agree with David about stowing the new hygrometer in the case pocket. But why not put the original hygrometer back in it's hole? Even though it doesn't work, it will still look right there. I'd bet that a huge percentage of the hygrometers built into violin cases don't work, at least not reliably. Join the club.
Hot-melt glue or urethane adhesive should do it. If that fails there is always duct tape.
Thank you David.
There are no other holes or vents in it?
It's pretty much identical to this one:
On that one, it doesn't look there is a provision for externally adjusting the hygrometer.
I'd use the urethane glue. Either the usual foaming type (being very careful), or I see there is a non-foaming version that might be more appropriate for this job.
Isn't that a screw?
It may be a screw head, but it looks like it's positioned to adjust the thermometer, rather than the hygrometer.
Oh... can you show me what things hygros that are adjustable have so I can check if mine have them as well?
Answering as a cigar collector and I use a lot of those hygros :-)
I own several of these hygrometers, and usually they are not air-tight as Carlos said. I never knew what this screw would do, since most of these hygrometers open (the stainless steel cover with the whole is usually removable and that way you can adjust the usually paper indicators without touching the needle which seems really sensitive) I second calibrating the hygros with the "salt" method as posted above
Wow, that was what I was looking for!