Printable View
The window screen frames if you look closely you will see that the aluminum has been bent and molded into shape which makes them sheet. Window frames most of the time will be extruded. If your not used to the look and feel of the two it can be tricky. And if in doubt place items in a seperate bin when going to the yard and see if they can help sort. Just make sure its a slow day and not a whole lot.
The yard by me just changed their aluminum grades. Now they only have mixed al, and al cans. Last time I was there they put my al sheet and al extrusion together, but took the cast al separate. I was really surprised when they put all my carefully separated cast and sheet together this time.
Last time I took some mixed and wanted to ask how they separated it. They had a can crusher set up right beside the scale and with all the racket that thing was making, there wasn't any way one could possibly communicate with the scale operator.
The Fuzzy Pumper Barber Shop. "We'll fix Mommy's hair just so, you can do it with PlayDough!" How do I remember this crap??
My yard is cast, sheet, irony and wheels. No extruded. I need to find another yard.
I took in a bunch of heat sinks last week. They gave me "old sheet" price for them. They weren't cast so they must have been sheet? Grrr
I think it all has to do with the part of the country you are in. My local yard doesn't recognize the lines on aluminum as extruded anymore. Now they go by thickness. If it isn't thick enough, they say it is sheet.
Computer heat shrinks are extruded. Coming out to the die they would look like a bunch of "W's" lined up if you were to look at the them from the end. They are then cross cut to make the little points.
Window frames that are rolled out of sheet will have a seam which is crimped. If you look at one of these frames from the end you can also see how the sheet was rolled to form the shape of the frame then crimped.
Extruded window frames need to have the die cast clips which normally hold the ends together removed or cut off from the ends in order to receive extrusion price. If the clips in the ends are not removed or the window frames still have screws in them we buy them as old sheet. This may be why you didn't receive extrusion price for them because they were not clean or the scale operator didn't think you knew the difference and paid you less trying to make themselves more.