sorry robo what i ment was only 1 AR UV glass
but your right the standard seems to have been set in conjunction with truevue in the states
the ISO standard they use is based on reports from the image permenace institue, which happens to be "sponsored" by true vue
the other problem for framers
no one will actually give you a straight answer
other knowledgable framers (a few of them are sponsored by true vue) tend to give mind bending responses when asked
suppliers dont seem to have a clue, they repeat what they are told by the marketing people
and as for the guild setting a standard by "oh thats what other people have done" makes a complete mockery of standards.
Is there a way to remove a scratch from glass?
-
A3DFramer
- Posts: 200
- Joined: Fri 18 May, 2012 6:51 pm
- Location: Shropshire
- Organisation: Collectors Cases
- Interests: Virtual 3D Model making, Digital Graphics.
- Location: Shropshire
Re: Is there a way to remove a scratch from glass?
There is a way to remove a scratch from a pane of glass, however all those who have said that it is better to get a new pane of glass, are probably correct in the the majority of occasions that the framer would experience.
I have worked with glass fabricators, who might come up with the instance that would make it plausible to try to smooth out a scratch and know of instances where it has been done successfully.
Float glass, rolled glass or a lump of formed glass might be suitable but I cannot think that the more exotic coated glass types would come into the frame.
First the scratch has to been ground out, using a grinding paste sufficiently coarse to remove enough glass to remove the scratch, this will leave the glass scoured so then the surface must be polished back to a smoothness that will match the clarity of the rest of the glass. Stitched mops with a largish radius are needed for the first part, softer mops for the latter. It does work, takes a long time and the risk of breaking the work is high.
If you ever come up with the need to to put this into practice you will know what a heart-breaking job is!!
I have worked with glass fabricators, who might come up with the instance that would make it plausible to try to smooth out a scratch and know of instances where it has been done successfully.
Float glass, rolled glass or a lump of formed glass might be suitable but I cannot think that the more exotic coated glass types would come into the frame.
First the scratch has to been ground out, using a grinding paste sufficiently coarse to remove enough glass to remove the scratch, this will leave the glass scoured so then the surface must be polished back to a smoothness that will match the clarity of the rest of the glass. Stitched mops with a largish radius are needed for the first part, softer mops for the latter. It does work, takes a long time and the risk of breaking the work is high.
If you ever come up with the need to to put this into practice you will know what a heart-breaking job is!!