Hi all, I normally clean all my glass globes in warm water with washing up liquid, then dry with a cloth and rest them on some kitchen roll on the window sill while i clean/ service the rest of the lamp but i've had a few crack and fall apart in front of me and i'm a bit miffed as to why they do it, its only been the more fragile types like the Vapalux M1, Coleman straight globes that seem to do it, never had any problems with M320's or Tilleys etc, anyone got any ideas as to why they do it? i don't think my place is haunted wouldn't be so bad if they weren't £15-£20 each to replace! Thanks.
The globes could have uneven stresses from heat possibly caused by holes in mantles, rain etc. The extra stress on the glass from handling could cause this . I have just had a Jackwall globe break in my hands while cleaning which was caused by damage from a broken mantle. Your place is probably not haunted.
Well my schizophrenic neighbour did die a while back and nobody realized for a week so you never know! In a way i'd rather they did go in my hand so at least i'd know it was the handling rather than delayed reaction just sitting there on the window sill, so its just one of those things you can't do anything about then.
I've had a few crack spontaneously on the shelf or in the lantern which is ******g annoying, to say the least. But there's no use crying over spilt milk - or cracked glass come to that...
Yes it bloody well is, i'm glad at present its only the fairly easily obtainable ones that i get hold of, it must be exceptionally frustrating if its a rare one!! although not worth that much i'm quite wary about touching the Veritas Superb one i have!
I have also had glasses and globes and chimneys crack for no apparent reason and I have heard that glass is unstable.
Someone I know had access to a kiln and used to bake his Tilley globes to release the stresses in the glass(not sure to what temperature). He claimed this method worked quite well.
that could make a lot of sense . glass is a super cooled liquid , so heating in a kiln could remove stress . kerry
Laboratory glass blowers have a light box setup with a polarised light source and a polarised window to look through that make the stresses in the glass visible as a moire pattern. The glass object is on a turntable in the box and the viewing window polarising screen can be rotated. To release stresses in the glass i.e. anneal it, it is heated in a kiln (not sure to what exact temperature) and very gradually allowed to cool inside the kiln for at least 24 hours.
MG, Just wondering the numbers on a Tilley globe refer to what ?. Because it seems to me not for type but material it's made from. regards From NZ, Alex
@toad of the cape What numbers? 171 is the X246 globe; 182 is the “onion” globe. Edit: 284 is for the IL47/Kl80 globe. Cheers Tony
Hello Tony, I have a 171 onion for sure that is odd, will take a photo for you when I make it to W/S. regards Alex
@toad of the cape That certainly is an oddity! Mistamped? The Tilley parts “bible” shows the globe numbers here: https://classicpressurelamps.com/threads/how-to-recognise-parts-for-your-tilley.1520/ Maybe @pete sav, @Mackburner, @David Shouksmith, or someone else may have something to say on this. Cheers Tony
Hello Phil, Must be a mis-print. Have you received my entry's to survey, and are some of the English 237's chromed ? regards Alex
I have never seen one with that number on unless its' been on a 246 globe wonder if its a error in factory
