You can hot bend lexan but you have to preheat it for some time at just
below 212* F to drive the moisture out of the material before raising
the temp to the bend temp.

I don't recall the time nor temp I used, though. This was done about 18
years ago for my landing light on my RV-6. The lexan did craze
somewhat. Would not have been good used for a windshield or window.

John

Ed Sullivan wrote:
On Tue, 5 Dec 2006 17:05:39 -0500, "Capt. Geoffrey Thorpe" The Sea
Hawk at wow way d0t com wrote:


"J.Kahn" wrote in message
news
Whats' the minimum bend radius for 1/8 and 3/16" polycarbonate sheet?

Bending hot or cold?

I've seen references that suggest using a sheet metal brake which is an
almost negligable radius (and I assume a cold bend)

Hot you should be able to form it at will.


I don't think lexan lends itself to hot bends, however I have made
several three panel winshields in a sheet metal brake. I bends
beautifully, however don't ever spill gasoline on it, especially if it
is stressed or it will craze and shatter almost immediately.