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Glass Identification - Post here for all ID requests => Glass => Topic started by: Sunflower77 on January 07, 2022, 04:45:41 PM

Title: Did Mdina every use acid etching?
Post by: Sunflower77 on January 07, 2022, 04:45:41 PM
I have an orange and black mushroom. It looks more resin than glass as not high shine. Marked Mdina 1000
Title: Re: Did Mdina every use acid etching?
Post by: chopin-liszt on January 07, 2022, 05:59:15 PM
Hi and welcome.  :)
They didn't use acid in the very beginning, but it was introduced for etching the Maltese cross on a few items in the '70s. I have no idea what the 1000 means.
To tell glass from resin, if you take a hot pin or needle to the base, resin will melt, smoke or smell. Glass won't.
And glass should feel cool to the touch, resin would be warm, then there is the weight, glass would be heavier.
Title: Re: Did Mdina every use acid etching?
Post by: Lustrousstone on January 07, 2022, 09:26:25 PM
Sounds like it's sandblasted to create a frosted finish to me and that's OK
Title: Re: Did Mdina every use acid etching?
Post by: Sunflower77 on January 07, 2022, 10:39:32 PM
Thank you. I am trying to attach a picture but they are all common up too large. Any ideas how to attach pls?
Title: Re: Did Mdina every use acid etching?
Post by: Paul S. on January 08, 2022, 08:25:45 AM
you will need to reduce the size of your pix  -  for posting here a maximum size of about 700 is necessary -  assume you're using a mobile?               Did you try the pin test? :)
Title: Re: Did Mdina every use acid etching?
Post by: Sunflower77 on January 08, 2022, 10:26:46 AM
Hi yes tried the pin. Didn't do anything, so assuming glass. It's just got a rougher texture and looks like acid reaction.on the glass. I will try to upload. I can't fund anything like it on the Internet other than the shape. Thanks
Title: Re: Did Mdina every use acid etching?
Post by: Sunflower77 on January 08, 2022, 10:42:43 AM
Photos
Title: Re: Did Mdina every use acid etching?
Post by: Sunflower77 on January 08, 2022, 10:46:23 AM
And another
Title: Re: Did Mdina every use acid etching?
Post by: chopin-liszt on January 08, 2022, 02:08:44 PM
 ;D Thank-you so much for the images. This is a bit unusual. I suspect it is related to a range of rather small pieces which was not producced for terribly long, most often found in teal and yellow, but some with a pink background with blue decor.
The surface is just how those enamels appear - with not a terribly high shine. The powder effect is somewhat retained in the background, while the high shine appears on the dark colour.
I'll have a look around for some other examples from this unusual range to show you.

Found a thread with a few examples and discussion.  8)

https://www.glassmessages.com/index.php/topic,58368.0.html
Title: Re: Did Mdina every use acid etching?
Post by: Sunflower77 on January 08, 2022, 09:09:30 PM
Thank you gor your reply. The owls are cute but seem to be glossy compared to the mushroom I have. The black bits are shiny but the orange on top is like it has bits peeled away to expose the black. I have attached another couple of pics.
Title: Re: Did Mdina every use acid etching?
Post by: chopin-liszt on January 08, 2022, 09:20:41 PM
Your mushroom decor is the same as the pink and blue one. It's just how the different enamels used to provide the colours behave.
Think more about oil floating on water. The enamels on the surface of your mushoom have behaved like that when heated - they do not want to mix so they pull away from each other,
Your raised yellow bits are like the oil, pulling itself together to get away from the bits it doesn't like.
The darker underlayer is more liquidy than the starting-to-melt yellow powders applied, they each have different temperatures at which they start running.