Jeff & Peter, I also built my oven out of 2 in polystyrene insulation blocks
with foil backing. With an XS mine only had to be big enough to take
ailerons, flaps & tail planes. I sealed mine at both ends, except for a
small exit hole at ground level at one end and heated it with a single hair
dryer poked through the foam at the other end. A thermometer poked through
the side wall kept a check on temp. For Ampreg I was aiming at 16 hrs at 50
C, and the system delivered this perfectly. I guess if you have a big enough
system to take complete wings then you might need 2 hairdryers. Don't forget
to support the cooked items generously to discourage them from bending! Best
of luck! David Joyce, G-XSDJ
----- Original Message -----
From: "Jeffrey J Paris" <jeffrey-j-paris@excite.com>
Sent: Thursday, December 18, 2008 12:21 AM
Subject: Europa-List: A question about post curing?
Dear Listers,A question about post curing our epoxy parts. Today we built
ourselves an "oven" for baking our parts at the appropriate 40-50 degree
celsius for post cure. We built a 16' X 4' X 4' enclosure out of foil claded
4X8 sheets of insulation foam. The box is backed up to a basement brick
fireplace (no open flames) in which I would like to place a suitable heating
element. I also have use of an attic fan to low air around the cavity. Has
anybody attempted this before? And if so what did you use to heat the space.
I went to a website that helps you calculate the heating requirements for
256 cubic feet of space @ 50 degrees celsius came to about 8900 btu's,
however, heat does build up and I want a consistent heat over a period of
hours therefore I will need a thermostat of sorts I would guess.Any advice
out there? I'm not a thermo engineer just an individual Europa builder who's
looking for an inexpensive way to do the job.Thank you for your time and
consideration.Cheers and Happy Holidays,Sincerely,Jeff and Peter Paris Kit#
A012 Monowheel Classic
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