The contact surface of the wire with the template is near zero, so heat transfer
into the template is negligible. The fact that it also happens with formica
templates supports the above point. Now the contact surface of wire with air is
all of the wire. The wire outside of the foam block cools much more then the
wire in the foam. The only way to avoid the thick ends is to make foam blocks
2-4 cm larger than needed, then cut to size after cutting the airfoil. To much
hassle compared to a little sanding of the panel ends IMO.
>Hi, guys,
>
>Right on this thread, I'd like to know from you your opinion/ideas on how to
>avoid the (for me, at least) unavoidable increase in the cut wing thickness
>at both extremes.
...
> I was led to
>believe that the reason should be something related to the wire loosing heat
>in contact with the templates, and consequently the net result would have
>been less kerf at the wing extremes. For this reason I expected an
>amelioration with the templates apart, but almost no result.
>Is my opinion physically wrong, or simply is that templates are not enough
>apart from foam, or even else ?
>Did anyone ever measured the temperature in various points of the wire ?
>
>Ciao.
>Tullio.
>
________________________________________________________________________
_____ _____ __
/ ___/| / ___/| / /|
Oleg Golovidov / /__ |/ / /__ |/ / / /
Engineous Software Inc. / ___/| /__ /| / / /
www.engineous.com / /__ |/ ___/ / / / / /
(919)677-6700 x107 /____/| /____/ / /_/ /
|___ |/ |____|/ |_|/
RCSE-List facilities provided by Model Airplane News. Send "subscribe" and
"unsubscribe" requests to [EMAIL PROTECTED]
