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jonboy
06-19-2012, 01:07 PM
two laminated glass windscreens, 2.5 mm + 2.5mm thick, and the plastic or whatever in the middle that makes it laminated. I need to radius the top corners, polish the edges and internally radius the bottom corners to 'step over' the supports' feet a 'cut out' of maybe 8mm. 3/8 " radius... short of taking 'em down the glass works... a long way from here... any tips on how to do this with the usual array of tools at my disposal from angle grinders belt sanders, the Mighty Dremel....?

Bob Cleek
06-19-2012, 01:16 PM
Take it to your local automotive glass shop even if you have to drive a ways. (I don't know about Portugal, but they are all over the place here. Cars are always getting their windshields broken.) Don't bother messing with it yourself. Laminated safety glass is tricky stuff. They have the tools and the know-how. (diamond grinders, etc.) I haven't found them expensive at all, comparitively. I do know that a lot depends on the type of laminated safety glass and its age. It is rather easy to bust a pane if you don't know what you are doing and, I expect, even if you do. It may be even cheaper to have them make a new pane than to mess with an older one, but they'd be the best judge of that.

I stupidly let a heat gun get to close to a small window when I was stripping varnish recently and it cracked all over the place, so I'll have to be making a trip to my auto glass man one of these days soon. It's about seven inches by three and oval. I don't think a new one will cost me more than fifty bucks and likely less, but it's been a while since I had such work done. Price depends on size, of course.

P.I. Stazzer-Newt
06-19-2012, 01:23 PM
Grinding glass is a specialised thing.

A friend's wife decided to make a few Tiffany type lampshades - she had, and knew how to use a "Toyo oil-wheel cutter", but decided to do the angles with his grinder.

The glass dust killed the bearings.

PeterSibley
06-19-2012, 08:27 PM
Grinding glass is a specialised thing.

A friend's wife decided to make a few Tiffany type lampshades - she had, and knew how to use a "Toyo oil-wheel cutter", but decided to do the angles with his grinder.

The glass dust killed the bearings.

My neighbour is a glasier and does all those processes . He uses a moderately slow moving, water cooled grinder. The glass edge is covered in a slurry all the time . He cut some laminated glass for me recently, scored it both side (2 layers ) ,cracked along the line then poured "metho" ( methylated spirit... alcohol) into the crack to dissolve the laminating plastic layer. I don't do it, I ask him.