Gents,

The canopy was good but not good enough for me.
When observing from other angles it was too wide.

So the first one to short, 7mm number 1
Second length was good but too wide.
Third?

Making the third canopy I did learn a couple of things I found important to tell.

Keep clearance (play?) between the screws and perspex of the adaptor plate!

The temperature of the material is very, very, very important.
I did say 160 degrees C (320 F) but that is too much for this material.
Max 150 (302 F) degrees is good but you must use an thermometer in the oven to show the right measured temperature.

First put only the plug in the oven for about a quarter of an hour. When this is a wooden plug check it under this temperature and sand any unevenness, you can take it out the oven with (oven?)gloves.
Then open the oven an insert the adaptor with the Perspex , the temp is than about 140 C (284 F).
but , and that seems to be important:
Switch on the heating element (when off) by adjust for a moment the setpint at 160 degrees C (320 F) and back to 150 (302 F).
When the measured tempearature rises to 145 degrees C (293F) switch of the heating element by lowering the setpoint . The temperature still will rise some degrees depending of the oven.
Watch the material and take it out at 148 degrees or on any moment you see little bubbles in the material, and press it over the plug.

I hope you understand but look the result at the picture.

Canopy 3 , temperature was about 5 degrees too high and the element was still on. The radiation of the element is the reason of the milky canopy, the same you see in canopy 1 but that was still usable for VFR flying, canopy 3 pertinent not! With 3 the pilot only can fly on his instruments!.

Canopy four is the result of the research I described, right shape an clearance for VFR flying.

Second picture some material I did use to observe the temperature and result. Also trying using aluminum foil didn’t have result the mask the heating element, the pespex is too cold than to use..
Last picture the compare of the fourth canopy with the Top Flite from Kingaltair’s Plane.

Cees