Any idea how I can get a more realistic glass effect?
Also try the piping gel will give it that look as well
You can use gelatine sheets they look like glass almost
I've never used these, where do I get them, and are they placed on top of BC or fondant? Sorry to be ignorant about this... 
And heavensent,
Piping gel-hummmm- spread it on over fondant? Is there a clear? I have white and blue-I've never used this either My DH picked it up by mistake instead of paste color 
Thanks to you both for the help!
Kathy
Here is a link:
http://www.gourmetsleuth.com/pDetail.asp?p=312
I guess you can just put it on BC. these are just gelatine but in form of sheets or they call it leaf. I have seen the sheets used in gingerbread homes for windows.
You could also melt sugar and pour it onto foil, let it harden and place the windshield in place.
Note that gelatin sheets have a diamond pattern imprinted on them. They are not perfectly clear and smooth. Looks nice as a window in a gingerbread house (like a divided light window), but not so nice as a windshield.
You can spread a thin layer of clear piping gel over grey bc or fondant for a glass effect. Don't use too much gel or it will look like water!
poured sugar
scroll down to the middle of the page
http://www.pastrychef.com/Archives_ep_32.html
Hi! I see some wonderful ideas here! But in answer to a previous question you asked: Yes, piping gel does come in "clear" (has almost a very faint beige-ish tint). I buy big tubs of it so I can mix it with paste colors to create any shade needed for different projects. Good luck! And please share your photos with us when you're done! 
Note that gelatin sheets have a diamond pattern imprinted on them. They are not perfectly clear and smooth. Looks nice as a window in a gingerbread house (like a divided light window), but not so nice as a windshield.
You can spread a thin layer of clear piping gel over grey bc or fondant for a glass effect. Don't use too much gel or it will look like water!
Diane, how do you spread the thin layer of piping gel over buttercream? With a paintbrush? Spatula?
Sorry to barge in here but I need to make a glass jar effect and was thinking about somehow getting the gel on top of the gray bc but wasn't sure if it would mess up the smoothed bc.
Thanks.
When I use piping gel for glass....it depends on the size of the surface as to how you put it on. I use a decorating bag with like a #10 tip on it and kind of spread it in the area. Then if you want to use a spatula, dipped in hot water, or a paint brush you can smooth it out more. I have a picture of a cake I did in my photos. It is the 5th photo with the wine glass. I built the glass up with white icing, airbrushed it the wine color, the put the piping gel over the top. It really was smoother than what the picture looks like.
Okay, the results are in...
I tried all the suggestions for making a glass windshield and windows for the dump truck. The most realistic look , and easiest (for me, anyway ) is the poured sugar. Thanks becky27. I made a little tray out of foil and lightly greased the bottom, heated 2 T each sugar and karo in a little custard cup in the microwave-it only took 1 min 35 sec- and poured some in the tray. When it cooled, I washed the grease film off, and it's really clear-just like glass 
!
Thanks again!
As a side note:
all4cake-what a great site that is-lots of info.
Diane, I can't get conf glaze (they are out at my cake place), so I'm using vodka, karo and LD-so my car paint is the $99 Maaco Special 
If this silly truck turns out half as well as it is in my head, and/or half as well as the sum of the trial parts, I'll post pictures-if not you'll see it in the Disaster Forum 
For some reason I have that old Johnny Cash song running thru my mind..."One Piece At A Time"...
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